[jira] [Created] (CALCITE-559) Correlated subquery will hit exception in Calcite

["Jinfeng Ni (JIRA)" <ji...@apache.org>]

Jinfeng Ni created CALCITE-559:
----------------------------------

             Summary: Correlated subquery will hit exception in Calcite
                 Key: CALCITE-559
                 URL: https://issues.apache.org/jira/browse/CALCITE-559
             Project: Calcite
          Issue Type: Bug
            Reporter: Jinfeng Ni
            Assignee: Julian Hyde


Calcite will throw exception, for a query with a correlated subquery.   I tried both sqlline and as a Junit test case inJDBCTest. Both of them hit exception:

1. sqlline
{code}
sqlline> !connect jdbc:calcite:model=core/src/test/resources/hsqldb-foodmart-lattice-model.json admin admin
0: jdbc:calcite:model=core/src/test/resources> select e."employee_id", d."department_id" from "foodmart"."employee" e, "foodmart"."department" d where e."department_id" = d."department_id" and e."salary" > (select avg(e2."salary") from "foodmart"."employee" e2 where e2."store_id" = e."store_id");
Error: exception while executing query: while executing SQL [SELECT "$f0"
FROM (SELECT "employee"."store_id" AS "$f0"
FROM "foodmart"."department"
INNER JOIN "foodmart"."employee") AS "t"
GROUP BY "$f0"] (state=,code=0)
{code}

2. As a Junit testcase:
{code}

  @Test public void testJoinCorreScalarSubQ()
      throws ClassNotFoundException, SQLException {
    CalciteAssert.that()
        .with(CalciteAssert.Config.FOODMART_CLONE)
        .query("select e.\"employee_id\", d.\"department_id\" "
            + " from \"employee\" e, \"department\" d "
            + " where e.\"department_id\" = d.\"department_id\" and "
            + "       e.\"salary\" > (select avg(e2.\"salary\") "
            + "                       from \"employee\" e2 "
            + " where e2.\"store_id\" = e.\"store_id\")"
        ).returnsCount(0);
  }
{code}
Caused by: java.lang.RuntimeException: With materializationsEnabled=false, limit=0
	at org.apache.calcite.test.CalciteAssert.assertQuery(CalciteAssert.java:461)
	at org.apache.calcite.test.CalciteAssert$AssertQuery.returns(CalciteAssert.java:1159)
	... 29 more
Caused by: java.lang.AssertionError: Internal error: Error while applying rule EnumerableJoinRule, args [rel#160:LogicalJoin.NONE.[](left=rel#75:Subset#0.ENUMERABLE.[],right=rel#93:Subset#9.NONE.[],condition=AND(=($6, $17), >($11, $18)),joinType=inner)]
	at org.apache.calcite.util.Util.newInternal(Util.java:739)
	at org.apache.calcite.plan.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:251)
	at ...
	... 30 more
Caused by: java.lang.AssertionError: Internal error: Error occurred while applying rule EnumerableJoinRule
	at org.apache.calcite.util.Util.newInternal(Util.java:739)
	at 	... 44 more
Caused by: java.lang.AssertionError: type mismatch:
ref:
DECIMAL(10, 4)
input:
DECIMAL(10, 4) NOT NULL
	at org.apache.calcite.plan.RelOptUtil.eq(RelOptUtil.java:1608)
	at org.apache.calcite.rex.RexChecker.visitInputRef(RexChecker.java:120)
	at .....
{code}

The sqlline run seems to hit exception during enumerable execution, while the Junit run seems to hit exception in planning phase.  Probably, that's because sqlline by default does not turn on assertion check. 



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