' failsXiao Meng created DRILL-427:
-------------------------------
Summary: select <columns> from <table> where <column> = '<VARCHAR>' fails
Key: DRILL-427
URL: https://issues.apache.org/jira/browse/DRILL-427
Project: Apache Drill
Issue Type: Bug
Reporter: Xiao Meng
We need to filter the result which is essential for querying metadata if the user specify the catalog, schema_name, table_name and so on.
But the where clause will fail when compare with a column with VARCHAR type. It seems a cast coding problem as shown in the sqlline log
{code}
0: jdbc:drill:zk=local> select TABLE_NAME, COLUMN_NAME, ORDINAL_POSITION from INFORMATION_SCHEMA.COLUMNS where TABLE_NAME = 'VIEWS';
Query failed: org.apache.drill.exec.rpc.RpcException: Remote failure while running query.[error_id: "1c68bfdc-3390-4f1a-88cc-d93f9e65e002"
endpoint {
address: "localhost"
user_port: 31010
control_port: 31011
data_port: 31012
}
error_type: 0
message: "Failure while parsing sql. < ClassCastException:[ org.eigenbase.util.NlsString cannot be cast to java.lang.String ]"
]
Error: exception while executing query (state=,code=0)
{code}
The sqlline log is
{code}
0:39:28.570 [WorkManager Event Thread] DEBUG o.apache.drill.exec.work.WorkManager - Starting pending task org.apache.drill.exec.work.foreman.Foreman@4ec35eb5
10:39:28.571 [Client-1] DEBUG o.a.d.e.rpc.user.QueryResultHandler - Received QueryId part1: 7946799108619977974
part2: -7560732490996708466
succesfully. Adding listener org.apache.drill.jdbc.DrillResultSet$Listener@7c7ee578
10:39:28.590 [WorkManager-3] DEBUG o.a.d.e.planner.logical.DrillOptiq - RexCall =(CAST($2):VARCHAR(5) CHARACTER SET "ISO-8859-1" COLLATE "ISO-8859-1$en_US$primary" NOT NULL, 'VIEWS'), {}
10:39:28.591 [WorkManager-3] DEBUG o.a.d.e.planner.logical.DrillOptiq - Binary
10:39:28.592 [WorkManager-3] DEBUG o.a.d.e.planner.logical.DrillOptiq - RexCall CAST($2):VARCHAR(5) CHARACTER SET "ISO-8859-1" COLLATE "ISO-8859-1$en_US$primary" NOT NULL, {}
10:39:28.592 [WorkManager-3] DEBUG o.a.d.e.planner.logical.DrillOptiq - Special
10:39:28.594 [WorkManager-3] ERROR o.a.drill.exec.work.foreman.Foreman - Error c43534ea-b7d8-41ea-9d16-d96eb6cc20a0: Failure while parsing sql.
java.lang.ClassCastException: org.eigenbase.util.NlsString cannot be cast to java.lang.String
at org.apache.drill.exec.planner.logical.DrillOptiq$RexToDrill.visitLiteral(DrillOptiq.java:191) ~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
at org.apache.drill.exec.planner.logical.DrillOptiq$RexToDrill.visitLiteral(DrillOptiq.java:63) ~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
at org.eigenbase.rex.RexLiteral.accept(RexLiteral.java:599) ~[optiq-core-0.4.18.jar:na]
at org.apache.drill.exec.planner.logical.DrillOptiq$RexToDrill.visitCall(DrillOptiq.java:90) ~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
at org.apache.drill.exec.planner.logical.DrillOptiq$RexToDrill.visitCall(DrillOptiq.java:63) ~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
at org.eigenbase.rex.RexCall.accept(RexCall.java:106) ~[optiq-core-0.4.18.jar:na]
at org.apache.drill.exec.planner.logical.DrillOptiq.toDrill(DrillOptiq.java:60) ~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
at org.apache.drill.exec.planner.logical.DrillFilterRel.implement(DrillFilterRel.java:56) ~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
at org.apache.drill.exec.planner.logical.DrillImplementor.visitChild(DrillImplementor.java:75) ~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
at org.apache.drill.exec.planner.logical.DrillProjectRel.implement(DrillProjectRel.java:77) ~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
at org.apache.drill.exec.planner.logical.DrillImplementor.visitChild(DrillImplementor.java:75) ~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
at org.apache.drill.exec.planner.logical.DrillScreenRel.implement(DrillScreenRel.java:72) ~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
at org.apache.drill.exec.planner.logical.DrillImplementor.go(DrillImplementor.java:62) ~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
{code}
For the reference, the table is like
{code}
0: jdbc:drill:zk=local> select TABLE_NAME, COLUMN_NAME, ORDINAL_POSITION from INFORMATION_SCHEMA.COLUMNS;
+------------+-------------+------------------+
| TABLE_NAME | COLUMN_NAME | ORDINAL_POSITION |
+------------+-------------+------------------+
| VIEWS | TABLE_CATALOG | 0 |
| VIEWS | TABLE_SHEMA | 1 |
| VIEWS | TABLE_NAME | 2 |
| VIEWS | VIEW_DEFINITION | 3 |
| COLUMNS | TABLE_CATALOG | 0 |
| COLUMNS | TABLE_SCHEMA | 1 |
| COLUMNS | TABLE_NAME | 2 |
| COLUMNS | COLUMN_NAME | 3 |
| COLUMNS | ORDINAL_POSITION | 4 |
| COLUMNS | IS_NULLABLE | 5 |
| COLUMNS | DATA_TYPE | 6 |
| COLUMNS | CHARACTER_MAXIMUM_LENGTH | 7 |
| COLUMNS | NUMERIC_PRECISION_RADIX | 8 |
| COLUMNS | NUMERIC_SCALE | 9 |
| COLUMNS | NUMERIC_PRECISION | 10 |
| TABLES | TABLE_CATALOG | 0 |
| TABLES | TABLE_SCHEMA | 1 |
| TABLES | TABLE_NAME | 2 |
| TABLES | TABLE_TYPE | 3 |
| CATALOGS | CATALOG_NAME | 0 |
| CATALOGS | CATALOG_DESCRIPTION | 1 |
| CATALOGS | CATALOG_CONNECT | 2 |
| SCHEMATA | CATALOG_NAME | 0 |
| SCHEMATA | SCHEMA_NAME | 1 |
| SCHEMATA | SCHEMA_OWNER | 2 |
+------------+-------------+------------------+
{code}
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