[11/57] [abbrv] tajo git commit: TAJO-1577: Add test cases to verify join plans. (jihoon)

[ji...@apache.org]

http://git-wip-us.apache.org/repos/asf/tajo/blob/4b1b7799/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.Hash.plan
----------------------------------------------------------------------
diff --git a/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.Hash.plan b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.Hash.plan
new file mode 100644
index 0000000..22a5037
--- /dev/null
+++ b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.Hash.plan
@@ -0,0 +1,65 @@
+explain
+-------------------------------
+PROJECTION(4)
+  => Targets: default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), 201405 as key1, 5-LOW as key2
+  => out schema: {(4) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), key1 (TEXT), key2 (TEXT)}
+  => in  schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+   SELECTION(3)
+     => Search Cond: default.o.o_orderpriority (TEXT) = 5-LOW
+      JOIN(6)(LEFT_OUTER)
+        => Join Cond: default.l.l_orderkey (INT4) = default.o.o_orderkey (INT4)
+        => target list: default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)
+        => out schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+        => in schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+         SCAN(1) on default.orders as o
+           => target list: default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)
+           => out schema: {(2) default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+           => in schema: {(9) default.o.o_clerk (TEXT), default.o.o_comment (TEXT), default.o.o_custkey (INT4), default.o.o_orderdate (TEXT), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT), default.o.o_orderstatus (TEXT), default.o.o_shippriority (INT4), default.o.o_totalprice (FLOAT8)}
+         SCAN(0) on default.lineitem as l
+           => target list: default.l.l_orderkey (INT4)
+           => out schema: {(1) default.l.l_orderkey (INT4)}
+           => in schema: {(16) default.l.l_comment (TEXT), default.l.l_commitdate (TEXT), default.l.l_discount (FLOAT8), default.l.l_extendedprice (FLOAT8), default.l.l_linenumber (INT4), default.l.l_linestatus (TEXT), default.l.l_orderkey (INT4), default.l.l_partkey (INT4), default.l.l_quantity (FLOAT8), default.l.l_receiptdate (TEXT), default.l.l_returnflag (TEXT), default.l.l_shipdate (TEXT), default.l.l_shipinstruct (TEXT), default.l.l_shipmode (TEXT), default.l.l_suppkey (INT4), default.l.l_tax (FLOAT8)}
+explain
+-------------------------------
+-------------------------------------------------------------------------------
+Execution Block Graph (TERMINAL - eb_0000000000000_0000_000004)
+-------------------------------------------------------------------------------
+|-eb_0000000000000_0000_000004
+   |-eb_0000000000000_0000_000003
+-------------------------------------------------------------------------------
+Order of Execution
+-------------------------------------------------------------------------------
+1: eb_0000000000000_0000_000003
+2: eb_0000000000000_0000_000004
+-------------------------------------------------------------------------------
+
+=======================================================
+Block Id: eb_0000000000000_0000_000003 [ROOT]
+=======================================================
+
+[Enforcers]
+ 0: type=Broadcast, tables=default.o
+
+PROJECTION(4)
+  => Targets: default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), 201405 as key1, 5-LOW as key2
+  => out schema: {(4) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), key1 (TEXT), key2 (TEXT)}
+  => in  schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+   SELECTION(3)
+     => Search Cond: default.o.o_orderpriority (TEXT) = 5-LOW
+      JOIN(6)(LEFT_OUTER)
+        => Join Cond: default.l.l_orderkey (INT4) = default.o.o_orderkey (INT4)
+        => target list: default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)
+        => out schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+        => in schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+         SCAN(1) on default.orders as o
+           => target list: default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)
+           => out schema: {(2) default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+           => in schema: {(9) default.o.o_clerk (TEXT), default.o.o_comment (TEXT), default.o.o_custkey (INT4), default.o.o_orderdate (TEXT), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT), default.o.o_orderstatus (TEXT), default.o.o_shippriority (INT4), default.o.o_totalprice (FLOAT8)}
+         SCAN(0) on default.lineitem as l
+           => target list: default.l.l_orderkey (INT4)
+           => out schema: {(1) default.l.l_orderkey (INT4)}
+           => in schema: {(16) default.l.l_comment (TEXT), default.l.l_commitdate (TEXT), default.l.l_discount (FLOAT8), default.l.l_extendedprice (FLOAT8), default.l.l_linenumber (INT4), default.l.l_linestatus (TEXT), default.l.l_orderkey (INT4), default.l.l_partkey (INT4), default.l.l_quantity (FLOAT8), default.l.l_receiptdate (TEXT), default.l.l_returnflag (TEXT), default.l.l_shipdate (TEXT), default.l.l_shipinstruct (TEXT), default.l.l_shipmode (TEXT), default.l.l_suppkey (INT4), default.l.l_tax (FLOAT8)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000004 [TERMINAL]
+=======================================================

http://git-wip-us.apache.org/repos/asf/tajo/blob/4b1b7799/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.Hash_NoBroadcast.plan
----------------------------------------------------------------------
diff --git a/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.Hash_NoBroadcast.plan b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.Hash_NoBroadcast.plan
new file mode 100644
index 0000000..0bd853a
--- /dev/null
+++ b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.Hash_NoBroadcast.plan
@@ -0,0 +1,92 @@
+explain
+-------------------------------
+PROJECTION(4)
+  => Targets: default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), 201405 as key1, 5-LOW as key2
+  => out schema: {(4) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), key1 (TEXT), key2 (TEXT)}
+  => in  schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+   SELECTION(3)
+     => Search Cond: default.o.o_orderpriority (TEXT) = 5-LOW
+      JOIN(6)(LEFT_OUTER)
+        => Join Cond: default.l.l_orderkey (INT4) = default.o.o_orderkey (INT4)
+        => target list: default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)
+        => out schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+        => in schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+         SCAN(1) on default.orders as o
+           => target list: default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)
+           => out schema: {(2) default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+           => in schema: {(9) default.o.o_clerk (TEXT), default.o.o_comment (TEXT), default.o.o_custkey (INT4), default.o.o_orderdate (TEXT), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT), default.o.o_orderstatus (TEXT), default.o.o_shippriority (INT4), default.o.o_totalprice (FLOAT8)}
+         SCAN(0) on default.lineitem as l
+           => target list: default.l.l_orderkey (INT4)
+           => out schema: {(1) default.l.l_orderkey (INT4)}
+           => in schema: {(16) default.l.l_comment (TEXT), default.l.l_commitdate (TEXT), default.l.l_discount (FLOAT8), default.l.l_extendedprice (FLOAT8), default.l.l_linenumber (INT4), default.l.l_linestatus (TEXT), default.l.l_orderkey (INT4), default.l.l_partkey (INT4), default.l.l_quantity (FLOAT8), default.l.l_receiptdate (TEXT), default.l.l_returnflag (TEXT), default.l.l_shipdate (TEXT), default.l.l_shipinstruct (TEXT), default.l.l_shipmode (TEXT), default.l.l_suppkey (INT4), default.l.l_tax (FLOAT8)}
+explain
+-------------------------------
+-------------------------------------------------------------------------------
+Execution Block Graph (TERMINAL - eb_0000000000000_0000_000004)
+-------------------------------------------------------------------------------
+|-eb_0000000000000_0000_000004
+   |-eb_0000000000000_0000_000003
+      |-eb_0000000000000_0000_000002
+      |-eb_0000000000000_0000_000001
+-------------------------------------------------------------------------------
+Order of Execution
+-------------------------------------------------------------------------------
+1: eb_0000000000000_0000_000001
+2: eb_0000000000000_0000_000002
+3: eb_0000000000000_0000_000003
+4: eb_0000000000000_0000_000004
+-------------------------------------------------------------------------------
+
+=======================================================
+Block Id: eb_0000000000000_0000_000001 [LEAF]
+=======================================================
+
+[Outgoing]
+[q_0000000000000_0000] 1 => 3 (type=HASH_SHUFFLE, key=default.l.l_orderkey (INT4), num=32)
+
+SCAN(0) on default.lineitem as l
+  => target list: default.l.l_orderkey (INT4)
+  => out schema: {(1) default.l.l_orderkey (INT4)}
+  => in schema: {(16) default.l.l_comment (TEXT), default.l.l_commitdate (TEXT), default.l.l_discount (FLOAT8), default.l.l_extendedprice (FLOAT8), default.l.l_linenumber (INT4), default.l.l_linestatus (TEXT), default.l.l_orderkey (INT4), default.l.l_partkey (INT4), default.l.l_quantity (FLOAT8), default.l.l_receiptdate (TEXT), default.l.l_returnflag (TEXT), default.l.l_shipdate (TEXT), default.l.l_shipinstruct (TEXT), default.l.l_shipmode (TEXT), default.l.l_suppkey (INT4), default.l.l_tax (FLOAT8)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000002 [LEAF]
+=======================================================
+
+[Outgoing]
+[q_0000000000000_0000] 2 => 3 (type=HASH_SHUFFLE, key=default.o.o_orderkey (INT4), num=32)
+
+SCAN(1) on default.orders as o
+  => target list: default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)
+  => out schema: {(2) default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+  => in schema: {(9) default.o.o_clerk (TEXT), default.o.o_comment (TEXT), default.o.o_custkey (INT4), default.o.o_orderdate (TEXT), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT), default.o.o_orderstatus (TEXT), default.o.o_shippriority (INT4), default.o.o_totalprice (FLOAT8)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000003 [ROOT]
+=======================================================
+
+[Incoming]
+[q_0000000000000_0000] 1 => 3 (type=HASH_SHUFFLE, key=default.l.l_orderkey (INT4), num=32)
+[q_0000000000000_0000] 2 => 3 (type=HASH_SHUFFLE, key=default.o.o_orderkey (INT4), num=32)
+
+PROJECTION(4)
+  => Targets: default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), 201405 as key1, 5-LOW as key2
+  => out schema: {(4) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), key1 (TEXT), key2 (TEXT)}
+  => in  schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+   SELECTION(3)
+     => Search Cond: default.o.o_orderpriority (TEXT) = 5-LOW
+      JOIN(6)(LEFT_OUTER)
+        => Join Cond: default.l.l_orderkey (INT4) = default.o.o_orderkey (INT4)
+        => target list: default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)
+        => out schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+        => in schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+         SCAN(9) on eb_0000000000000_0000_000002
+           => out schema: {(2) default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+           => in schema: {(2) default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+         SCAN(8) on eb_0000000000000_0000_000001
+           => out schema: {(1) default.l.l_orderkey (INT4)}
+           => in schema: {(1) default.l.l_orderkey (INT4)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000004 [TERMINAL]
+=======================================================

http://git-wip-us.apache.org/repos/asf/tajo/blob/4b1b7799/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.Sort.plan
----------------------------------------------------------------------
diff --git a/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.Sort.plan b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.Sort.plan
new file mode 100644
index 0000000..22a5037
--- /dev/null
+++ b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.Sort.plan
@@ -0,0 +1,65 @@
+explain
+-------------------------------
+PROJECTION(4)
+  => Targets: default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), 201405 as key1, 5-LOW as key2
+  => out schema: {(4) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), key1 (TEXT), key2 (TEXT)}
+  => in  schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+   SELECTION(3)
+     => Search Cond: default.o.o_orderpriority (TEXT) = 5-LOW
+      JOIN(6)(LEFT_OUTER)
+        => Join Cond: default.l.l_orderkey (INT4) = default.o.o_orderkey (INT4)
+        => target list: default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)
+        => out schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+        => in schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+         SCAN(1) on default.orders as o
+           => target list: default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)
+           => out schema: {(2) default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+           => in schema: {(9) default.o.o_clerk (TEXT), default.o.o_comment (TEXT), default.o.o_custkey (INT4), default.o.o_orderdate (TEXT), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT), default.o.o_orderstatus (TEXT), default.o.o_shippriority (INT4), default.o.o_totalprice (FLOAT8)}
+         SCAN(0) on default.lineitem as l
+           => target list: default.l.l_orderkey (INT4)
+           => out schema: {(1) default.l.l_orderkey (INT4)}
+           => in schema: {(16) default.l.l_comment (TEXT), default.l.l_commitdate (TEXT), default.l.l_discount (FLOAT8), default.l.l_extendedprice (FLOAT8), default.l.l_linenumber (INT4), default.l.l_linestatus (TEXT), default.l.l_orderkey (INT4), default.l.l_partkey (INT4), default.l.l_quantity (FLOAT8), default.l.l_receiptdate (TEXT), default.l.l_returnflag (TEXT), default.l.l_shipdate (TEXT), default.l.l_shipinstruct (TEXT), default.l.l_shipmode (TEXT), default.l.l_suppkey (INT4), default.l.l_tax (FLOAT8)}
+explain
+-------------------------------
+-------------------------------------------------------------------------------
+Execution Block Graph (TERMINAL - eb_0000000000000_0000_000004)
+-------------------------------------------------------------------------------
+|-eb_0000000000000_0000_000004
+   |-eb_0000000000000_0000_000003
+-------------------------------------------------------------------------------
+Order of Execution
+-------------------------------------------------------------------------------
+1: eb_0000000000000_0000_000003
+2: eb_0000000000000_0000_000004
+-------------------------------------------------------------------------------
+
+=======================================================
+Block Id: eb_0000000000000_0000_000003 [ROOT]
+=======================================================
+
+[Enforcers]
+ 0: type=Broadcast, tables=default.o
+
+PROJECTION(4)
+  => Targets: default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), 201405 as key1, 5-LOW as key2
+  => out schema: {(4) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), key1 (TEXT), key2 (TEXT)}
+  => in  schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+   SELECTION(3)
+     => Search Cond: default.o.o_orderpriority (TEXT) = 5-LOW
+      JOIN(6)(LEFT_OUTER)
+        => Join Cond: default.l.l_orderkey (INT4) = default.o.o_orderkey (INT4)
+        => target list: default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)
+        => out schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+        => in schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+         SCAN(1) on default.orders as o
+           => target list: default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)
+           => out schema: {(2) default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+           => in schema: {(9) default.o.o_clerk (TEXT), default.o.o_comment (TEXT), default.o.o_custkey (INT4), default.o.o_orderdate (TEXT), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT), default.o.o_orderstatus (TEXT), default.o.o_shippriority (INT4), default.o.o_totalprice (FLOAT8)}
+         SCAN(0) on default.lineitem as l
+           => target list: default.l.l_orderkey (INT4)
+           => out schema: {(1) default.l.l_orderkey (INT4)}
+           => in schema: {(16) default.l.l_comment (TEXT), default.l.l_commitdate (TEXT), default.l.l_discount (FLOAT8), default.l.l_extendedprice (FLOAT8), default.l.l_linenumber (INT4), default.l.l_linestatus (TEXT), default.l.l_orderkey (INT4), default.l.l_partkey (INT4), default.l.l_quantity (FLOAT8), default.l.l_receiptdate (TEXT), default.l.l_returnflag (TEXT), default.l.l_shipdate (TEXT), default.l.l_shipinstruct (TEXT), default.l.l_shipmode (TEXT), default.l.l_suppkey (INT4), default.l.l_tax (FLOAT8)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000004 [TERMINAL]
+=======================================================

http://git-wip-us.apache.org/repos/asf/tajo/blob/4b1b7799/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.Sort_NoBroadcast.plan
----------------------------------------------------------------------
diff --git a/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.Sort_NoBroadcast.plan b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.Sort_NoBroadcast.plan
new file mode 100644
index 0000000..0bd853a
--- /dev/null
+++ b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.Sort_NoBroadcast.plan
@@ -0,0 +1,92 @@
+explain
+-------------------------------
+PROJECTION(4)
+  => Targets: default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), 201405 as key1, 5-LOW as key2
+  => out schema: {(4) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), key1 (TEXT), key2 (TEXT)}
+  => in  schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+   SELECTION(3)
+     => Search Cond: default.o.o_orderpriority (TEXT) = 5-LOW
+      JOIN(6)(LEFT_OUTER)
+        => Join Cond: default.l.l_orderkey (INT4) = default.o.o_orderkey (INT4)
+        => target list: default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)
+        => out schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+        => in schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+         SCAN(1) on default.orders as o
+           => target list: default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)
+           => out schema: {(2) default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+           => in schema: {(9) default.o.o_clerk (TEXT), default.o.o_comment (TEXT), default.o.o_custkey (INT4), default.o.o_orderdate (TEXT), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT), default.o.o_orderstatus (TEXT), default.o.o_shippriority (INT4), default.o.o_totalprice (FLOAT8)}
+         SCAN(0) on default.lineitem as l
+           => target list: default.l.l_orderkey (INT4)
+           => out schema: {(1) default.l.l_orderkey (INT4)}
+           => in schema: {(16) default.l.l_comment (TEXT), default.l.l_commitdate (TEXT), default.l.l_discount (FLOAT8), default.l.l_extendedprice (FLOAT8), default.l.l_linenumber (INT4), default.l.l_linestatus (TEXT), default.l.l_orderkey (INT4), default.l.l_partkey (INT4), default.l.l_quantity (FLOAT8), default.l.l_receiptdate (TEXT), default.l.l_returnflag (TEXT), default.l.l_shipdate (TEXT), default.l.l_shipinstruct (TEXT), default.l.l_shipmode (TEXT), default.l.l_suppkey (INT4), default.l.l_tax (FLOAT8)}
+explain
+-------------------------------
+-------------------------------------------------------------------------------
+Execution Block Graph (TERMINAL - eb_0000000000000_0000_000004)
+-------------------------------------------------------------------------------
+|-eb_0000000000000_0000_000004
+   |-eb_0000000000000_0000_000003
+      |-eb_0000000000000_0000_000002
+      |-eb_0000000000000_0000_000001
+-------------------------------------------------------------------------------
+Order of Execution
+-------------------------------------------------------------------------------
+1: eb_0000000000000_0000_000001
+2: eb_0000000000000_0000_000002
+3: eb_0000000000000_0000_000003
+4: eb_0000000000000_0000_000004
+-------------------------------------------------------------------------------
+
+=======================================================
+Block Id: eb_0000000000000_0000_000001 [LEAF]
+=======================================================
+
+[Outgoing]
+[q_0000000000000_0000] 1 => 3 (type=HASH_SHUFFLE, key=default.l.l_orderkey (INT4), num=32)
+
+SCAN(0) on default.lineitem as l
+  => target list: default.l.l_orderkey (INT4)
+  => out schema: {(1) default.l.l_orderkey (INT4)}
+  => in schema: {(16) default.l.l_comment (TEXT), default.l.l_commitdate (TEXT), default.l.l_discount (FLOAT8), default.l.l_extendedprice (FLOAT8), default.l.l_linenumber (INT4), default.l.l_linestatus (TEXT), default.l.l_orderkey (INT4), default.l.l_partkey (INT4), default.l.l_quantity (FLOAT8), default.l.l_receiptdate (TEXT), default.l.l_returnflag (TEXT), default.l.l_shipdate (TEXT), default.l.l_shipinstruct (TEXT), default.l.l_shipmode (TEXT), default.l.l_suppkey (INT4), default.l.l_tax (FLOAT8)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000002 [LEAF]
+=======================================================
+
+[Outgoing]
+[q_0000000000000_0000] 2 => 3 (type=HASH_SHUFFLE, key=default.o.o_orderkey (INT4), num=32)
+
+SCAN(1) on default.orders as o
+  => target list: default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)
+  => out schema: {(2) default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+  => in schema: {(9) default.o.o_clerk (TEXT), default.o.o_comment (TEXT), default.o.o_custkey (INT4), default.o.o_orderdate (TEXT), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT), default.o.o_orderstatus (TEXT), default.o.o_shippriority (INT4), default.o.o_totalprice (FLOAT8)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000003 [ROOT]
+=======================================================
+
+[Incoming]
+[q_0000000000000_0000] 1 => 3 (type=HASH_SHUFFLE, key=default.l.l_orderkey (INT4), num=32)
+[q_0000000000000_0000] 2 => 3 (type=HASH_SHUFFLE, key=default.o.o_orderkey (INT4), num=32)
+
+PROJECTION(4)
+  => Targets: default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), 201405 as key1, 5-LOW as key2
+  => out schema: {(4) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), key1 (TEXT), key2 (TEXT)}
+  => in  schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+   SELECTION(3)
+     => Search Cond: default.o.o_orderpriority (TEXT) = 5-LOW
+      JOIN(6)(LEFT_OUTER)
+        => Join Cond: default.l.l_orderkey (INT4) = default.o.o_orderkey (INT4)
+        => target list: default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)
+        => out schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+        => in schema: {(3) default.l.l_orderkey (INT4), default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+         SCAN(9) on eb_0000000000000_0000_000002
+           => out schema: {(2) default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+           => in schema: {(2) default.o.o_orderkey (INT4), default.o.o_orderpriority (TEXT)}
+         SCAN(8) on eb_0000000000000_0000_000001
+           => out schema: {(1) default.l.l_orderkey (INT4)}
+           => in schema: {(1) default.l.l_orderkey (INT4)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000004 [TERMINAL]
+=======================================================

http://git-wip-us.apache.org/repos/asf/tajo/blob/4b1b7799/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.result
----------------------------------------------------------------------
diff --git a/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.result b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.result
new file mode 100644
index 0000000..100791d
--- /dev/null
+++ b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithConstantExpr5.result
@@ -0,0 +1,6 @@
+l_orderkey,o_orderkey,key1,key2
+-------------------------------
+1,1,201405,5-LOW
+1,1,201405,5-LOW
+3,3,201405,5-LOW
+3,3,201405,5-LOW

http://git-wip-us.apache.org/repos/asf/tajo/blob/4b1b7799/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.Hash.plan
----------------------------------------------------------------------
diff --git a/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.Hash.plan b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.Hash.plan
new file mode 100644
index 0000000..e35e6a5
--- /dev/null
+++ b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.Hash.plan
@@ -0,0 +1,78 @@
+explain
+-------------------------------
+SORT(3)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc),default.empty_orders.o_orderkey (INT4) (asc)
+   JOIN(6)(LEFT_OUTER)
+     => Join Cond: default.customer.c_custkey (INT4) = default.empty_orders.o_orderkey (INT4)
+     => target list: default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+     => out schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+     => in schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+      SCAN(1) on default.empty_orders
+        => target list: default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+        => out schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+        => in schema: {(9) default.empty_orders.o_clerk (TEXT), default.empty_orders.o_comment (TEXT), default.empty_orders.o_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderpriority (TEXT), default.empty_orders.o_orderstatus (TEXT), default.empty_orders.o_shippriority (INT4), default.empty_orders.o_totalprice (FLOAT8)}
+      SCAN(0) on default.customer
+        => target list: default.customer.c_custkey (INT4)
+        => out schema: {(1) default.customer.c_custkey (INT4)}
+        => in schema: {(8) default.customer.c_acctbal (FLOAT8), default.customer.c_address (TEXT), default.customer.c_comment (TEXT), default.customer.c_custkey (INT4), default.customer.c_mktsegment (TEXT), default.customer.c_name (TEXT), default.customer.c_nationkey (INT4), default.customer.c_phone (TEXT)}
+explain
+-------------------------------
+-------------------------------------------------------------------------------
+Execution Block Graph (TERMINAL - eb_0000000000000_0000_000005)
+-------------------------------------------------------------------------------
+|-eb_0000000000000_0000_000005
+   |-eb_0000000000000_0000_000004
+      |-eb_0000000000000_0000_000003
+-------------------------------------------------------------------------------
+Order of Execution
+-------------------------------------------------------------------------------
+1: eb_0000000000000_0000_000003
+2: eb_0000000000000_0000_000004
+3: eb_0000000000000_0000_000005
+-------------------------------------------------------------------------------
+
+=======================================================
+Block Id: eb_0000000000000_0000_000003 [LEAF]
+=======================================================
+
+[Outgoing]
+[q_0000000000000_0000] 3 => 4 (type=RANGE_SHUFFLE, key=default.customer.c_custkey (INT4), default.empty_orders.o_orderkey (INT4), num=32)
+
+[Enforcers]
+ 0: type=Broadcast, tables=default.empty_orders
+
+SORT(8)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc),default.empty_orders.o_orderkey (INT4) (asc)
+   JOIN(6)(LEFT_OUTER)
+     => Join Cond: default.customer.c_custkey (INT4) = default.empty_orders.o_orderkey (INT4)
+     => target list: default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+     => out schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+     => in schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+      SCAN(1) on default.empty_orders
+        => target list: default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+        => out schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+        => in schema: {(9) default.empty_orders.o_clerk (TEXT), default.empty_orders.o_comment (TEXT), default.empty_orders.o_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderpriority (TEXT), default.empty_orders.o_orderstatus (TEXT), default.empty_orders.o_shippriority (INT4), default.empty_orders.o_totalprice (FLOAT8)}
+      SCAN(0) on default.customer
+        => target list: default.customer.c_custkey (INT4)
+        => out schema: {(1) default.customer.c_custkey (INT4)}
+        => in schema: {(8) default.customer.c_acctbal (FLOAT8), default.customer.c_address (TEXT), default.customer.c_comment (TEXT), default.customer.c_custkey (INT4), default.customer.c_mktsegment (TEXT), default.customer.c_name (TEXT), default.customer.c_nationkey (INT4), default.customer.c_phone (TEXT)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000004 [ROOT]
+=======================================================
+
+[Incoming]
+[q_0000000000000_0000] 3 => 4 (type=RANGE_SHUFFLE, key=default.customer.c_custkey (INT4), default.empty_orders.o_orderkey (INT4), num=32)
+
+[Enforcers]
+ 0: sorted input=eb_0000000000000_0000_000003
+
+SORT(3)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc),default.empty_orders.o_orderkey (INT4) (asc)
+   SCAN(9) on eb_0000000000000_0000_000003
+     => out schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+     => in schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000005 [TERMINAL]
+=======================================================

http://git-wip-us.apache.org/repos/asf/tajo/blob/4b1b7799/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.Hash_NoBroadcast.plan
----------------------------------------------------------------------
diff --git a/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.Hash_NoBroadcast.plan b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.Hash_NoBroadcast.plan
new file mode 100644
index 0000000..9bf9a3e
--- /dev/null
+++ b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.Hash_NoBroadcast.plan
@@ -0,0 +1,105 @@
+explain
+-------------------------------
+SORT(3)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc),default.empty_orders.o_orderkey (INT4) (asc)
+   JOIN(6)(LEFT_OUTER)
+     => Join Cond: default.customer.c_custkey (INT4) = default.empty_orders.o_orderkey (INT4)
+     => target list: default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+     => out schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+     => in schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+      SCAN(1) on default.empty_orders
+        => target list: default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+        => out schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+        => in schema: {(9) default.empty_orders.o_clerk (TEXT), default.empty_orders.o_comment (TEXT), default.empty_orders.o_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderpriority (TEXT), default.empty_orders.o_orderstatus (TEXT), default.empty_orders.o_shippriority (INT4), default.empty_orders.o_totalprice (FLOAT8)}
+      SCAN(0) on default.customer
+        => target list: default.customer.c_custkey (INT4)
+        => out schema: {(1) default.customer.c_custkey (INT4)}
+        => in schema: {(8) default.customer.c_acctbal (FLOAT8), default.customer.c_address (TEXT), default.customer.c_comment (TEXT), default.customer.c_custkey (INT4), default.customer.c_mktsegment (TEXT), default.customer.c_name (TEXT), default.customer.c_nationkey (INT4), default.customer.c_phone (TEXT)}
+explain
+-------------------------------
+-------------------------------------------------------------------------------
+Execution Block Graph (TERMINAL - eb_0000000000000_0000_000005)
+-------------------------------------------------------------------------------
+|-eb_0000000000000_0000_000005
+   |-eb_0000000000000_0000_000004
+      |-eb_0000000000000_0000_000003
+         |-eb_0000000000000_0000_000002
+         |-eb_0000000000000_0000_000001
+-------------------------------------------------------------------------------
+Order of Execution
+-------------------------------------------------------------------------------
+1: eb_0000000000000_0000_000001
+2: eb_0000000000000_0000_000002
+3: eb_0000000000000_0000_000003
+4: eb_0000000000000_0000_000004
+5: eb_0000000000000_0000_000005
+-------------------------------------------------------------------------------
+
+=======================================================
+Block Id: eb_0000000000000_0000_000001 [LEAF]
+=======================================================
+
+[Outgoing]
+[q_0000000000000_0000] 1 => 3 (type=HASH_SHUFFLE, key=default.customer.c_custkey (INT4), num=32)
+
+SCAN(0) on default.customer
+  => target list: default.customer.c_custkey (INT4)
+  => out schema: {(1) default.customer.c_custkey (INT4)}
+  => in schema: {(8) default.customer.c_acctbal (FLOAT8), default.customer.c_address (TEXT), default.customer.c_comment (TEXT), default.customer.c_custkey (INT4), default.customer.c_mktsegment (TEXT), default.customer.c_name (TEXT), default.customer.c_nationkey (INT4), default.customer.c_phone (TEXT)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000002 [LEAF]
+=======================================================
+
+[Outgoing]
+[q_0000000000000_0000] 2 => 3 (type=HASH_SHUFFLE, key=default.empty_orders.o_orderkey (INT4), num=32)
+
+SCAN(1) on default.empty_orders
+  => target list: default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+  => out schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+  => in schema: {(9) default.empty_orders.o_clerk (TEXT), default.empty_orders.o_comment (TEXT), default.empty_orders.o_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderpriority (TEXT), default.empty_orders.o_orderstatus (TEXT), default.empty_orders.o_shippriority (INT4), default.empty_orders.o_totalprice (FLOAT8)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000003 [INTERMEDIATE]
+=======================================================
+
+[Incoming]
+[q_0000000000000_0000] 1 => 3 (type=HASH_SHUFFLE, key=default.customer.c_custkey (INT4), num=32)
+[q_0000000000000_0000] 2 => 3 (type=HASH_SHUFFLE, key=default.empty_orders.o_orderkey (INT4), num=32)
+
+[Outgoing]
+[q_0000000000000_0000] 3 => 4 (type=RANGE_SHUFFLE, key=default.customer.c_custkey (INT4), default.empty_orders.o_orderkey (INT4), num=32)
+
+SORT(10)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc),default.empty_orders.o_orderkey (INT4) (asc)
+   JOIN(6)(LEFT_OUTER)
+     => Join Cond: default.customer.c_custkey (INT4) = default.empty_orders.o_orderkey (INT4)
+     => target list: default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+     => out schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+     => in schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+      SCAN(9) on eb_0000000000000_0000_000002
+        => out schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+        => in schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+      SCAN(8) on eb_0000000000000_0000_000001
+        => out schema: {(1) default.customer.c_custkey (INT4)}
+        => in schema: {(1) default.customer.c_custkey (INT4)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000004 [ROOT]
+=======================================================
+
+[Incoming]
+[q_0000000000000_0000] 3 => 4 (type=RANGE_SHUFFLE, key=default.customer.c_custkey (INT4), default.empty_orders.o_orderkey (INT4), num=32)
+
+[Enforcers]
+ 0: sorted input=eb_0000000000000_0000_000003
+
+SORT(3)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc),default.empty_orders.o_orderkey (INT4) (asc)
+   SCAN(11) on eb_0000000000000_0000_000003
+     => out schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+     => in schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000005 [TERMINAL]
+=======================================================

http://git-wip-us.apache.org/repos/asf/tajo/blob/4b1b7799/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.Sort.plan
----------------------------------------------------------------------
diff --git a/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.Sort.plan b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.Sort.plan
new file mode 100644
index 0000000..e35e6a5
--- /dev/null
+++ b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.Sort.plan
@@ -0,0 +1,78 @@
+explain
+-------------------------------
+SORT(3)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc),default.empty_orders.o_orderkey (INT4) (asc)
+   JOIN(6)(LEFT_OUTER)
+     => Join Cond: default.customer.c_custkey (INT4) = default.empty_orders.o_orderkey (INT4)
+     => target list: default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+     => out schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+     => in schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+      SCAN(1) on default.empty_orders
+        => target list: default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+        => out schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+        => in schema: {(9) default.empty_orders.o_clerk (TEXT), default.empty_orders.o_comment (TEXT), default.empty_orders.o_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderpriority (TEXT), default.empty_orders.o_orderstatus (TEXT), default.empty_orders.o_shippriority (INT4), default.empty_orders.o_totalprice (FLOAT8)}
+      SCAN(0) on default.customer
+        => target list: default.customer.c_custkey (INT4)
+        => out schema: {(1) default.customer.c_custkey (INT4)}
+        => in schema: {(8) default.customer.c_acctbal (FLOAT8), default.customer.c_address (TEXT), default.customer.c_comment (TEXT), default.customer.c_custkey (INT4), default.customer.c_mktsegment (TEXT), default.customer.c_name (TEXT), default.customer.c_nationkey (INT4), default.customer.c_phone (TEXT)}
+explain
+-------------------------------
+-------------------------------------------------------------------------------
+Execution Block Graph (TERMINAL - eb_0000000000000_0000_000005)
+-------------------------------------------------------------------------------
+|-eb_0000000000000_0000_000005
+   |-eb_0000000000000_0000_000004
+      |-eb_0000000000000_0000_000003
+-------------------------------------------------------------------------------
+Order of Execution
+-------------------------------------------------------------------------------
+1: eb_0000000000000_0000_000003
+2: eb_0000000000000_0000_000004
+3: eb_0000000000000_0000_000005
+-------------------------------------------------------------------------------
+
+=======================================================
+Block Id: eb_0000000000000_0000_000003 [LEAF]
+=======================================================
+
+[Outgoing]
+[q_0000000000000_0000] 3 => 4 (type=RANGE_SHUFFLE, key=default.customer.c_custkey (INT4), default.empty_orders.o_orderkey (INT4), num=32)
+
+[Enforcers]
+ 0: type=Broadcast, tables=default.empty_orders
+
+SORT(8)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc),default.empty_orders.o_orderkey (INT4) (asc)
+   JOIN(6)(LEFT_OUTER)
+     => Join Cond: default.customer.c_custkey (INT4) = default.empty_orders.o_orderkey (INT4)
+     => target list: default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+     => out schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+     => in schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+      SCAN(1) on default.empty_orders
+        => target list: default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+        => out schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+        => in schema: {(9) default.empty_orders.o_clerk (TEXT), default.empty_orders.o_comment (TEXT), default.empty_orders.o_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderpriority (TEXT), default.empty_orders.o_orderstatus (TEXT), default.empty_orders.o_shippriority (INT4), default.empty_orders.o_totalprice (FLOAT8)}
+      SCAN(0) on default.customer
+        => target list: default.customer.c_custkey (INT4)
+        => out schema: {(1) default.customer.c_custkey (INT4)}
+        => in schema: {(8) default.customer.c_acctbal (FLOAT8), default.customer.c_address (TEXT), default.customer.c_comment (TEXT), default.customer.c_custkey (INT4), default.customer.c_mktsegment (TEXT), default.customer.c_name (TEXT), default.customer.c_nationkey (INT4), default.customer.c_phone (TEXT)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000004 [ROOT]
+=======================================================
+
+[Incoming]
+[q_0000000000000_0000] 3 => 4 (type=RANGE_SHUFFLE, key=default.customer.c_custkey (INT4), default.empty_orders.o_orderkey (INT4), num=32)
+
+[Enforcers]
+ 0: sorted input=eb_0000000000000_0000_000003
+
+SORT(3)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc),default.empty_orders.o_orderkey (INT4) (asc)
+   SCAN(9) on eb_0000000000000_0000_000003
+     => out schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+     => in schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000005 [TERMINAL]
+=======================================================

http://git-wip-us.apache.org/repos/asf/tajo/blob/4b1b7799/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.Sort_NoBroadcast.plan
----------------------------------------------------------------------
diff --git a/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.Sort_NoBroadcast.plan b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.Sort_NoBroadcast.plan
new file mode 100644
index 0000000..9bf9a3e
--- /dev/null
+++ b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.Sort_NoBroadcast.plan
@@ -0,0 +1,105 @@
+explain
+-------------------------------
+SORT(3)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc),default.empty_orders.o_orderkey (INT4) (asc)
+   JOIN(6)(LEFT_OUTER)
+     => Join Cond: default.customer.c_custkey (INT4) = default.empty_orders.o_orderkey (INT4)
+     => target list: default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+     => out schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+     => in schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+      SCAN(1) on default.empty_orders
+        => target list: default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+        => out schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+        => in schema: {(9) default.empty_orders.o_clerk (TEXT), default.empty_orders.o_comment (TEXT), default.empty_orders.o_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderpriority (TEXT), default.empty_orders.o_orderstatus (TEXT), default.empty_orders.o_shippriority (INT4), default.empty_orders.o_totalprice (FLOAT8)}
+      SCAN(0) on default.customer
+        => target list: default.customer.c_custkey (INT4)
+        => out schema: {(1) default.customer.c_custkey (INT4)}
+        => in schema: {(8) default.customer.c_acctbal (FLOAT8), default.customer.c_address (TEXT), default.customer.c_comment (TEXT), default.customer.c_custkey (INT4), default.customer.c_mktsegment (TEXT), default.customer.c_name (TEXT), default.customer.c_nationkey (INT4), default.customer.c_phone (TEXT)}
+explain
+-------------------------------
+-------------------------------------------------------------------------------
+Execution Block Graph (TERMINAL - eb_0000000000000_0000_000005)
+-------------------------------------------------------------------------------
+|-eb_0000000000000_0000_000005
+   |-eb_0000000000000_0000_000004
+      |-eb_0000000000000_0000_000003
+         |-eb_0000000000000_0000_000002
+         |-eb_0000000000000_0000_000001
+-------------------------------------------------------------------------------
+Order of Execution
+-------------------------------------------------------------------------------
+1: eb_0000000000000_0000_000001
+2: eb_0000000000000_0000_000002
+3: eb_0000000000000_0000_000003
+4: eb_0000000000000_0000_000004
+5: eb_0000000000000_0000_000005
+-------------------------------------------------------------------------------
+
+=======================================================
+Block Id: eb_0000000000000_0000_000001 [LEAF]
+=======================================================
+
+[Outgoing]
+[q_0000000000000_0000] 1 => 3 (type=HASH_SHUFFLE, key=default.customer.c_custkey (INT4), num=32)
+
+SCAN(0) on default.customer
+  => target list: default.customer.c_custkey (INT4)
+  => out schema: {(1) default.customer.c_custkey (INT4)}
+  => in schema: {(8) default.customer.c_acctbal (FLOAT8), default.customer.c_address (TEXT), default.customer.c_comment (TEXT), default.customer.c_custkey (INT4), default.customer.c_mktsegment (TEXT), default.customer.c_name (TEXT), default.customer.c_nationkey (INT4), default.customer.c_phone (TEXT)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000002 [LEAF]
+=======================================================
+
+[Outgoing]
+[q_0000000000000_0000] 2 => 3 (type=HASH_SHUFFLE, key=default.empty_orders.o_orderkey (INT4), num=32)
+
+SCAN(1) on default.empty_orders
+  => target list: default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+  => out schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+  => in schema: {(9) default.empty_orders.o_clerk (TEXT), default.empty_orders.o_comment (TEXT), default.empty_orders.o_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderpriority (TEXT), default.empty_orders.o_orderstatus (TEXT), default.empty_orders.o_shippriority (INT4), default.empty_orders.o_totalprice (FLOAT8)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000003 [INTERMEDIATE]
+=======================================================
+
+[Incoming]
+[q_0000000000000_0000] 1 => 3 (type=HASH_SHUFFLE, key=default.customer.c_custkey (INT4), num=32)
+[q_0000000000000_0000] 2 => 3 (type=HASH_SHUFFLE, key=default.empty_orders.o_orderkey (INT4), num=32)
+
+[Outgoing]
+[q_0000000000000_0000] 3 => 4 (type=RANGE_SHUFFLE, key=default.customer.c_custkey (INT4), default.empty_orders.o_orderkey (INT4), num=32)
+
+SORT(10)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc),default.empty_orders.o_orderkey (INT4) (asc)
+   JOIN(6)(LEFT_OUTER)
+     => Join Cond: default.customer.c_custkey (INT4) = default.empty_orders.o_orderkey (INT4)
+     => target list: default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+     => out schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+     => in schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+      SCAN(9) on eb_0000000000000_0000_000002
+        => out schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+        => in schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+      SCAN(8) on eb_0000000000000_0000_000001
+        => out schema: {(1) default.customer.c_custkey (INT4)}
+        => in schema: {(1) default.customer.c_custkey (INT4)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000004 [ROOT]
+=======================================================
+
+[Incoming]
+[q_0000000000000_0000] 3 => 4 (type=RANGE_SHUFFLE, key=default.customer.c_custkey (INT4), default.empty_orders.o_orderkey (INT4), num=32)
+
+[Enforcers]
+ 0: sorted input=eb_0000000000000_0000_000003
+
+SORT(3)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc),default.empty_orders.o_orderkey (INT4) (asc)
+   SCAN(11) on eb_0000000000000_0000_000003
+     => out schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+     => in schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000005 [TERMINAL]
+=======================================================

http://git-wip-us.apache.org/repos/asf/tajo/blob/4b1b7799/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.result
----------------------------------------------------------------------
diff --git a/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.result b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.result
new file mode 100644
index 0000000..d367c07
--- /dev/null
+++ b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable1.result
@@ -0,0 +1,7 @@
+c_custkey,o_orderkey,o_orderstatus,o_orderdate
+-------------------------------
+1,null,null,null
+2,null,null,null
+3,null,null,null
+4,null,null,null
+5,null,null,null

http://git-wip-us.apache.org/repos/asf/tajo/blob/4b1b7799/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable2.Hash.plan
----------------------------------------------------------------------
diff --git a/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable2.Hash.plan b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable2.Hash.plan
new file mode 100644
index 0000000..bca8356
--- /dev/null
+++ b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable2.Hash.plan
@@ -0,0 +1,109 @@
+explain
+-------------------------------
+SORT(4)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc)
+   GROUP_BY(3)(c_custkey)
+     => exprs: (sum(default.empty_orders.o_orderkey (INT4)),max(default.empty_orders.o_orderstatus (TEXT)),max(default.empty_orders.o_orderdate (TEXT)))
+     => target list: default.customer.c_custkey (INT4), ?sum (INT8), ?max_1 (TEXT), ?max_2 (TEXT)
+     => out schema:{(4) ?max_1 (TEXT), ?max_2 (TEXT), ?sum (INT8), default.customer.c_custkey (INT4)}
+     => in schema:{(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+      JOIN(7)(LEFT_OUTER)
+        => Join Cond: default.customer.c_custkey (INT4) = default.empty_orders.o_orderkey (INT4)
+        => target list: default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+        => out schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+        => in schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+         SCAN(1) on default.empty_orders
+           => target list: default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+           => out schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+           => in schema: {(9) default.empty_orders.o_clerk (TEXT), default.empty_orders.o_comment (TEXT), default.empty_orders.o_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderpriority (TEXT), default.empty_orders.o_orderstatus (TEXT), default.empty_orders.o_shippriority (INT4), default.empty_orders.o_totalprice (FLOAT8)}
+         SCAN(0) on default.customer
+           => target list: default.customer.c_custkey (INT4)
+           => out schema: {(1) default.customer.c_custkey (INT4)}
+           => in schema: {(8) default.customer.c_acctbal (FLOAT8), default.customer.c_address (TEXT), default.customer.c_comment (TEXT), default.customer.c_custkey (INT4), default.customer.c_mktsegment (TEXT), default.customer.c_name (TEXT), default.customer.c_nationkey (INT4), default.customer.c_phone (TEXT)}
+explain
+-------------------------------
+-------------------------------------------------------------------------------
+Execution Block Graph (TERMINAL - eb_0000000000000_0000_000006)
+-------------------------------------------------------------------------------
+|-eb_0000000000000_0000_000006
+   |-eb_0000000000000_0000_000005
+      |-eb_0000000000000_0000_000004
+         |-eb_0000000000000_0000_000003
+-------------------------------------------------------------------------------
+Order of Execution
+-------------------------------------------------------------------------------
+1: eb_0000000000000_0000_000003
+2: eb_0000000000000_0000_000004
+3: eb_0000000000000_0000_000005
+4: eb_0000000000000_0000_000006
+-------------------------------------------------------------------------------
+
+=======================================================
+Block Id: eb_0000000000000_0000_000003 [LEAF]
+=======================================================
+
+[Outgoing]
+[q_0000000000000_0000] 3 => 4 (type=HASH_SHUFFLE, key=default.customer.c_custkey (INT4), num=32)
+
+[Enforcers]
+ 0: type=Broadcast, tables=default.empty_orders
+
+GROUP_BY(9)(c_custkey)
+  => exprs: (sum(default.empty_orders.o_orderkey (INT4)),max(default.empty_orders.o_orderstatus (TEXT)),max(default.empty_orders.o_orderdate (TEXT)))
+  => target list: default.customer.c_custkey (INT4), ?sum_5 (INT8), ?max_6 (TEXT), ?max_7 (TEXT)
+  => out schema:{(4) default.customer.c_custkey (INT4), ?sum_5 (INT8), ?max_6 (TEXT), ?max_7 (TEXT)}
+  => in schema:{(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+   JOIN(7)(LEFT_OUTER)
+     => Join Cond: default.customer.c_custkey (INT4) = default.empty_orders.o_orderkey (INT4)
+     => target list: default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+     => out schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+     => in schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+      SCAN(1) on default.empty_orders
+        => target list: default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+        => out schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+        => in schema: {(9) default.empty_orders.o_clerk (TEXT), default.empty_orders.o_comment (TEXT), default.empty_orders.o_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderpriority (TEXT), default.empty_orders.o_orderstatus (TEXT), default.empty_orders.o_shippriority (INT4), default.empty_orders.o_totalprice (FLOAT8)}
+      SCAN(0) on default.customer
+        => target list: default.customer.c_custkey (INT4)
+        => out schema: {(1) default.customer.c_custkey (INT4)}
+        => in schema: {(8) default.customer.c_acctbal (FLOAT8), default.customer.c_address (TEXT), default.customer.c_comment (TEXT), default.customer.c_custkey (INT4), default.customer.c_mktsegment (TEXT), default.customer.c_name (TEXT), default.customer.c_nationkey (INT4), default.customer.c_phone (TEXT)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000004 [INTERMEDIATE]
+=======================================================
+
+[Incoming]
+[q_0000000000000_0000] 3 => 4 (type=HASH_SHUFFLE, key=default.customer.c_custkey (INT4), num=32)
+
+[Outgoing]
+[q_0000000000000_0000] 4 => 5 (type=RANGE_SHUFFLE, key=default.customer.c_custkey (INT4), num=32)
+
+SORT(11)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc)
+   GROUP_BY(3)(c_custkey)
+     => exprs: (sum(?sum_5 (INT8)),max(?max_6 (TEXT)),max(?max_7 (TEXT)))
+     => target list: default.customer.c_custkey (INT4), ?sum (INT8), ?max_1 (TEXT), ?max_2 (TEXT)
+     => out schema:{(4) ?max_1 (TEXT), ?max_2 (TEXT), ?sum (INT8), default.customer.c_custkey (INT4)}
+     => in schema:{(4) default.customer.c_custkey (INT4), ?sum_5 (INT8), ?max_6 (TEXT), ?max_7 (TEXT)}
+      SCAN(10) on eb_0000000000000_0000_000003
+        => out schema: {(4) default.customer.c_custkey (INT4), ?sum_5 (INT8), ?max_6 (TEXT), ?max_7 (TEXT)}
+        => in schema: {(4) default.customer.c_custkey (INT4), ?sum_5 (INT8), ?max_6 (TEXT), ?max_7 (TEXT)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000005 [ROOT]
+=======================================================
+
+[Incoming]
+[q_0000000000000_0000] 4 => 5 (type=RANGE_SHUFFLE, key=default.customer.c_custkey (INT4), num=32)
+
+[Enforcers]
+ 0: sorted input=eb_0000000000000_0000_000004
+
+SORT(4)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc)
+   SCAN(12) on eb_0000000000000_0000_000004
+     => out schema: {(4) ?max_1 (TEXT), ?max_2 (TEXT), ?sum (INT8), default.customer.c_custkey (INT4)}
+     => in schema: {(4) ?max_1 (TEXT), ?max_2 (TEXT), ?sum (INT8), default.customer.c_custkey (INT4)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000006 [TERMINAL]
+=======================================================

http://git-wip-us.apache.org/repos/asf/tajo/blob/4b1b7799/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable2.Hash_NoBroadcast.plan
----------------------------------------------------------------------
diff --git a/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable2.Hash_NoBroadcast.plan b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable2.Hash_NoBroadcast.plan
new file mode 100644
index 0000000..fd2e0d0
--- /dev/null
+++ b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable2.Hash_NoBroadcast.plan
@@ -0,0 +1,136 @@
+explain
+-------------------------------
+SORT(4)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc)
+   GROUP_BY(3)(c_custkey)
+     => exprs: (sum(default.empty_orders.o_orderkey (INT4)),max(default.empty_orders.o_orderstatus (TEXT)),max(default.empty_orders.o_orderdate (TEXT)))
+     => target list: default.customer.c_custkey (INT4), ?sum (INT8), ?max_1 (TEXT), ?max_2 (TEXT)
+     => out schema:{(4) ?max_1 (TEXT), ?max_2 (TEXT), ?sum (INT8), default.customer.c_custkey (INT4)}
+     => in schema:{(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+      JOIN(7)(LEFT_OUTER)
+        => Join Cond: default.customer.c_custkey (INT4) = default.empty_orders.o_orderkey (INT4)
+        => target list: default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+        => out schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+        => in schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+         SCAN(1) on default.empty_orders
+           => target list: default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+           => out schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+           => in schema: {(9) default.empty_orders.o_clerk (TEXT), default.empty_orders.o_comment (TEXT), default.empty_orders.o_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderpriority (TEXT), default.empty_orders.o_orderstatus (TEXT), default.empty_orders.o_shippriority (INT4), default.empty_orders.o_totalprice (FLOAT8)}
+         SCAN(0) on default.customer
+           => target list: default.customer.c_custkey (INT4)
+           => out schema: {(1) default.customer.c_custkey (INT4)}
+           => in schema: {(8) default.customer.c_acctbal (FLOAT8), default.customer.c_address (TEXT), default.customer.c_comment (TEXT), default.customer.c_custkey (INT4), default.customer.c_mktsegment (TEXT), default.customer.c_name (TEXT), default.customer.c_nationkey (INT4), default.customer.c_phone (TEXT)}
+explain
+-------------------------------
+-------------------------------------------------------------------------------
+Execution Block Graph (TERMINAL - eb_0000000000000_0000_000006)
+-------------------------------------------------------------------------------
+|-eb_0000000000000_0000_000006
+   |-eb_0000000000000_0000_000005
+      |-eb_0000000000000_0000_000004
+         |-eb_0000000000000_0000_000003
+            |-eb_0000000000000_0000_000002
+            |-eb_0000000000000_0000_000001
+-------------------------------------------------------------------------------
+Order of Execution
+-------------------------------------------------------------------------------
+1: eb_0000000000000_0000_000001
+2: eb_0000000000000_0000_000002
+3: eb_0000000000000_0000_000003
+4: eb_0000000000000_0000_000004
+5: eb_0000000000000_0000_000005
+6: eb_0000000000000_0000_000006
+-------------------------------------------------------------------------------
+
+=======================================================
+Block Id: eb_0000000000000_0000_000001 [LEAF]
+=======================================================
+
+[Outgoing]
+[q_0000000000000_0000] 1 => 3 (type=HASH_SHUFFLE, key=default.customer.c_custkey (INT4), num=32)
+
+SCAN(0) on default.customer
+  => target list: default.customer.c_custkey (INT4)
+  => out schema: {(1) default.customer.c_custkey (INT4)}
+  => in schema: {(8) default.customer.c_acctbal (FLOAT8), default.customer.c_address (TEXT), default.customer.c_comment (TEXT), default.customer.c_custkey (INT4), default.customer.c_mktsegment (TEXT), default.customer.c_name (TEXT), default.customer.c_nationkey (INT4), default.customer.c_phone (TEXT)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000002 [LEAF]
+=======================================================
+
+[Outgoing]
+[q_0000000000000_0000] 2 => 3 (type=HASH_SHUFFLE, key=default.empty_orders.o_orderkey (INT4), num=32)
+
+SCAN(1) on default.empty_orders
+  => target list: default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+  => out schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+  => in schema: {(9) default.empty_orders.o_clerk (TEXT), default.empty_orders.o_comment (TEXT), default.empty_orders.o_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderpriority (TEXT), default.empty_orders.o_orderstatus (TEXT), default.empty_orders.o_shippriority (INT4), default.empty_orders.o_totalprice (FLOAT8)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000003 [INTERMEDIATE]
+=======================================================
+
+[Incoming]
+[q_0000000000000_0000] 1 => 3 (type=HASH_SHUFFLE, key=default.customer.c_custkey (INT4), num=32)
+[q_0000000000000_0000] 2 => 3 (type=HASH_SHUFFLE, key=default.empty_orders.o_orderkey (INT4), num=32)
+
+[Outgoing]
+[q_0000000000000_0000] 3 => 4 (type=HASH_SHUFFLE, key=default.customer.c_custkey (INT4), num=32)
+
+GROUP_BY(11)(c_custkey)
+  => exprs: (sum(default.empty_orders.o_orderkey (INT4)),max(default.empty_orders.o_orderstatus (TEXT)),max(default.empty_orders.o_orderdate (TEXT)))
+  => target list: default.customer.c_custkey (INT4), ?sum_5 (INT8), ?max_6 (TEXT), ?max_7 (TEXT)
+  => out schema:{(4) default.customer.c_custkey (INT4), ?sum_5 (INT8), ?max_6 (TEXT), ?max_7 (TEXT)}
+  => in schema:{(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+   JOIN(7)(LEFT_OUTER)
+     => Join Cond: default.customer.c_custkey (INT4) = default.empty_orders.o_orderkey (INT4)
+     => target list: default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+     => out schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+     => in schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+      SCAN(10) on eb_0000000000000_0000_000002
+        => out schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+        => in schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+      SCAN(9) on eb_0000000000000_0000_000001
+        => out schema: {(1) default.customer.c_custkey (INT4)}
+        => in schema: {(1) default.customer.c_custkey (INT4)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000004 [INTERMEDIATE]
+=======================================================
+
+[Incoming]
+[q_0000000000000_0000] 3 => 4 (type=HASH_SHUFFLE, key=default.customer.c_custkey (INT4), num=32)
+
+[Outgoing]
+[q_0000000000000_0000] 4 => 5 (type=RANGE_SHUFFLE, key=default.customer.c_custkey (INT4), num=32)
+
+SORT(13)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc)
+   GROUP_BY(3)(c_custkey)
+     => exprs: (sum(?sum_5 (INT8)),max(?max_6 (TEXT)),max(?max_7 (TEXT)))
+     => target list: default.customer.c_custkey (INT4), ?sum (INT8), ?max_1 (TEXT), ?max_2 (TEXT)
+     => out schema:{(4) ?max_1 (TEXT), ?max_2 (TEXT), ?sum (INT8), default.customer.c_custkey (INT4)}
+     => in schema:{(4) default.customer.c_custkey (INT4), ?sum_5 (INT8), ?max_6 (TEXT), ?max_7 (TEXT)}
+      SCAN(12) on eb_0000000000000_0000_000003
+        => out schema: {(4) default.customer.c_custkey (INT4), ?sum_5 (INT8), ?max_6 (TEXT), ?max_7 (TEXT)}
+        => in schema: {(4) default.customer.c_custkey (INT4), ?sum_5 (INT8), ?max_6 (TEXT), ?max_7 (TEXT)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000005 [ROOT]
+=======================================================
+
+[Incoming]
+[q_0000000000000_0000] 4 => 5 (type=RANGE_SHUFFLE, key=default.customer.c_custkey (INT4), num=32)
+
+[Enforcers]
+ 0: sorted input=eb_0000000000000_0000_000004
+
+SORT(4)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc)
+   SCAN(14) on eb_0000000000000_0000_000004
+     => out schema: {(4) ?max_1 (TEXT), ?max_2 (TEXT), ?sum (INT8), default.customer.c_custkey (INT4)}
+     => in schema: {(4) ?max_1 (TEXT), ?max_2 (TEXT), ?sum (INT8), default.customer.c_custkey (INT4)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000006 [TERMINAL]
+=======================================================

http://git-wip-us.apache.org/repos/asf/tajo/blob/4b1b7799/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable2.Sort.plan
----------------------------------------------------------------------
diff --git a/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable2.Sort.plan b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable2.Sort.plan
new file mode 100644
index 0000000..bca8356
--- /dev/null
+++ b/tajo-core/src/test/resources/results/TestOuterJoinQuery/testLeftOuterJoinWithEmptyTable2.Sort.plan
@@ -0,0 +1,109 @@
+explain
+-------------------------------
+SORT(4)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc)
+   GROUP_BY(3)(c_custkey)
+     => exprs: (sum(default.empty_orders.o_orderkey (INT4)),max(default.empty_orders.o_orderstatus (TEXT)),max(default.empty_orders.o_orderdate (TEXT)))
+     => target list: default.customer.c_custkey (INT4), ?sum (INT8), ?max_1 (TEXT), ?max_2 (TEXT)
+     => out schema:{(4) ?max_1 (TEXT), ?max_2 (TEXT), ?sum (INT8), default.customer.c_custkey (INT4)}
+     => in schema:{(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+      JOIN(7)(LEFT_OUTER)
+        => Join Cond: default.customer.c_custkey (INT4) = default.empty_orders.o_orderkey (INT4)
+        => target list: default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+        => out schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+        => in schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+         SCAN(1) on default.empty_orders
+           => target list: default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+           => out schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+           => in schema: {(9) default.empty_orders.o_clerk (TEXT), default.empty_orders.o_comment (TEXT), default.empty_orders.o_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderpriority (TEXT), default.empty_orders.o_orderstatus (TEXT), default.empty_orders.o_shippriority (INT4), default.empty_orders.o_totalprice (FLOAT8)}
+         SCAN(0) on default.customer
+           => target list: default.customer.c_custkey (INT4)
+           => out schema: {(1) default.customer.c_custkey (INT4)}
+           => in schema: {(8) default.customer.c_acctbal (FLOAT8), default.customer.c_address (TEXT), default.customer.c_comment (TEXT), default.customer.c_custkey (INT4), default.customer.c_mktsegment (TEXT), default.customer.c_name (TEXT), default.customer.c_nationkey (INT4), default.customer.c_phone (TEXT)}
+explain
+-------------------------------
+-------------------------------------------------------------------------------
+Execution Block Graph (TERMINAL - eb_0000000000000_0000_000006)
+-------------------------------------------------------------------------------
+|-eb_0000000000000_0000_000006
+   |-eb_0000000000000_0000_000005
+      |-eb_0000000000000_0000_000004
+         |-eb_0000000000000_0000_000003
+-------------------------------------------------------------------------------
+Order of Execution
+-------------------------------------------------------------------------------
+1: eb_0000000000000_0000_000003
+2: eb_0000000000000_0000_000004
+3: eb_0000000000000_0000_000005
+4: eb_0000000000000_0000_000006
+-------------------------------------------------------------------------------
+
+=======================================================
+Block Id: eb_0000000000000_0000_000003 [LEAF]
+=======================================================
+
+[Outgoing]
+[q_0000000000000_0000] 3 => 4 (type=HASH_SHUFFLE, key=default.customer.c_custkey (INT4), num=32)
+
+[Enforcers]
+ 0: type=Broadcast, tables=default.empty_orders
+
+GROUP_BY(9)(c_custkey)
+  => exprs: (sum(default.empty_orders.o_orderkey (INT4)),max(default.empty_orders.o_orderstatus (TEXT)),max(default.empty_orders.o_orderdate (TEXT)))
+  => target list: default.customer.c_custkey (INT4), ?sum_5 (INT8), ?max_6 (TEXT), ?max_7 (TEXT)
+  => out schema:{(4) default.customer.c_custkey (INT4), ?sum_5 (INT8), ?max_6 (TEXT), ?max_7 (TEXT)}
+  => in schema:{(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+   JOIN(7)(LEFT_OUTER)
+     => Join Cond: default.customer.c_custkey (INT4) = default.empty_orders.o_orderkey (INT4)
+     => target list: default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+     => out schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+     => in schema: {(4) default.customer.c_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+      SCAN(1) on default.empty_orders
+        => target list: default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)
+        => out schema: {(3) default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderstatus (TEXT)}
+        => in schema: {(9) default.empty_orders.o_clerk (TEXT), default.empty_orders.o_comment (TEXT), default.empty_orders.o_custkey (INT4), default.empty_orders.o_orderdate (TEXT), default.empty_orders.o_orderkey (INT4), default.empty_orders.o_orderpriority (TEXT), default.empty_orders.o_orderstatus (TEXT), default.empty_orders.o_shippriority (INT4), default.empty_orders.o_totalprice (FLOAT8)}
+      SCAN(0) on default.customer
+        => target list: default.customer.c_custkey (INT4)
+        => out schema: {(1) default.customer.c_custkey (INT4)}
+        => in schema: {(8) default.customer.c_acctbal (FLOAT8), default.customer.c_address (TEXT), default.customer.c_comment (TEXT), default.customer.c_custkey (INT4), default.customer.c_mktsegment (TEXT), default.customer.c_name (TEXT), default.customer.c_nationkey (INT4), default.customer.c_phone (TEXT)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000004 [INTERMEDIATE]
+=======================================================
+
+[Incoming]
+[q_0000000000000_0000] 3 => 4 (type=HASH_SHUFFLE, key=default.customer.c_custkey (INT4), num=32)
+
+[Outgoing]
+[q_0000000000000_0000] 4 => 5 (type=RANGE_SHUFFLE, key=default.customer.c_custkey (INT4), num=32)
+
+SORT(11)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc)
+   GROUP_BY(3)(c_custkey)
+     => exprs: (sum(?sum_5 (INT8)),max(?max_6 (TEXT)),max(?max_7 (TEXT)))
+     => target list: default.customer.c_custkey (INT4), ?sum (INT8), ?max_1 (TEXT), ?max_2 (TEXT)
+     => out schema:{(4) ?max_1 (TEXT), ?max_2 (TEXT), ?sum (INT8), default.customer.c_custkey (INT4)}
+     => in schema:{(4) default.customer.c_custkey (INT4), ?sum_5 (INT8), ?max_6 (TEXT), ?max_7 (TEXT)}
+      SCAN(10) on eb_0000000000000_0000_000003
+        => out schema: {(4) default.customer.c_custkey (INT4), ?sum_5 (INT8), ?max_6 (TEXT), ?max_7 (TEXT)}
+        => in schema: {(4) default.customer.c_custkey (INT4), ?sum_5 (INT8), ?max_6 (TEXT), ?max_7 (TEXT)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000005 [ROOT]
+=======================================================
+
+[Incoming]
+[q_0000000000000_0000] 4 => 5 (type=RANGE_SHUFFLE, key=default.customer.c_custkey (INT4), num=32)
+
+[Enforcers]
+ 0: sorted input=eb_0000000000000_0000_000004
+
+SORT(4)
+  => Sort Keys: default.customer.c_custkey (INT4) (asc)
+   SCAN(12) on eb_0000000000000_0000_000004
+     => out schema: {(4) ?max_1 (TEXT), ?max_2 (TEXT), ?sum (INT8), default.customer.c_custkey (INT4)}
+     => in schema: {(4) ?max_1 (TEXT), ?max_2 (TEXT), ?sum (INT8), default.customer.c_custkey (INT4)}
+
+=======================================================
+Block Id: eb_0000000000000_0000_000006 [TERMINAL]
+=======================================================