[teiid-issues] [JBoss JIRA] (TEIID-3846) Wrong alias rewriting in subqueries
Steven Hawkins (JIRA)
issues at jboss.org
Mon Jun 6 10:32:01 EDT 2016
[ https://issues.jboss.org/browse/TEIID-3846?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steven Hawkins closed TEIID-3846.
---------------------------------
> Wrong alias rewriting in subqueries
> -----------------------------------
>
> Key: TEIID-3846
> URL: https://issues.jboss.org/browse/TEIID-3846
> Project: Teiid
> Issue Type: Bug
> Components: Query Engine
> Affects Versions: 8.7
> Reporter: Salvatore R
> Assignee: Steven Hawkins
> Fix For: 8.12.3, 8.13
>
>
> I defined two tables in PostgreSQL (but it's reproducible also in other databases like MySQL, for example) as follows:
> {code:sql}
> CREATE TABLE test_a
> (
> a integer,
> b integer
> );
> CREATE TABLE test_b
> (
> b integer,
> c integer
> );
> {code}
> Running this query:
> {code:sql}
> SELECT
> *
> FROM
> ( SELECT
> ( SELECT x.a FROM pg.test_a AS x WHERE x.b = g_0.c ) AS c_2
> FROM
> pg.test_b AS g_0
> ) AS v_0
> {code}
> I get the following exception:
> {code:sql}
> 13:11:30,073 WARN [org.teiid.CONNECTOR] (Worker5_QueryProcessorQueue50) 1iTDksSjXt1V Connector worker process failed for atomic-request=1iTDksSjXt1V.16.1.11: org.teiid.translator.jdbc.JDBCExecutionException: 0 TEIID11008:TEIID11004 Error executing statement(s): [Prepared Values: [] SQL: SELECT v_0.c_0 FROM (SELECT (SELECT g_1."a" FROM "public"."test_a" AS g_1 WHERE g_1."b" = g_1."c") AS c_0 FROM "public"."test_b" AS g_0) AS v_0]
> at org.teiid.translator.jdbc.JDBCQueryExecution.execute(JDBCQueryExecution.java:131) [translator-jdbc-8.12.0.CR1.jar:8.12.0.CR1]
> at org.teiid.dqp.internal.datamgr.ConnectorWorkItem.execute(ConnectorWorkItem.java:349)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_67]
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_67]
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_67]
> at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_67]
> at org.teiid.dqp.internal.datamgr.ConnectorManager$1.invoke(ConnectorManager.java:211)
> at com.sun.proxy.$Proxy47.execute(Unknown Source)
> at org.teiid.dqp.internal.process.DataTierTupleSource.getResults(DataTierTupleSource.java:298)
> at org.teiid.dqp.internal.process.DataTierTupleSource$1.call(DataTierTupleSource.java:110)
> at org.teiid.dqp.internal.process.DataTierTupleSource$1.call(DataTierTupleSource.java:107)
> at java.util.concurrent.FutureTask.run(FutureTask.java:262) [rt.jar:1.7.0_67]
> at org.teiid.dqp.internal.process.FutureWork.run(FutureWork.java:58)
> at org.teiid.dqp.internal.process.DQPWorkContext.runInContext(DQPWorkContext.java:276)
> at org.teiid.dqp.internal.process.ThreadReuseExecutor$RunnableWrapper.run(ThreadReuseExecutor.java:119)
> at org.teiid.dqp.internal.process.ThreadReuseExecutor$3.run(ThreadReuseExecutor.java:210)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_67]
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_67]
> at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_67]
> Caused by: org.postgresql.util.PSQLException: ERROR: column g_1.c does not exist
> Position: 91
> at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2157)
> at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1886)
> at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:255)
> at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:555)
> at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:417)
> at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:302)
> at org.jboss.jca.adapters.jdbc.WrappedPreparedStatement.executeQuery(WrappedPreparedStatement.java:462)
> at org.teiid.translator.jdbc.JDBCQueryExecution.execute(JDBCQueryExecution.java:123) [translator-jdbc-8.12.0.CR1.jar:8.12.0.CR1]
> ... 18 more
> {code}
> It seems that the problem is related to the alias "g_0" used for the source table "pg.test_b". In fact, if a different alias is used, the query runs without errors:
> {code:sql}
> SELECT
> *
> FROM
> ( SELECT
> ( SELECT x.a FROM pg.test_a AS x WHERE x.b = y.c ) AS c_2
> FROM
> pg.test_b AS y
> ) AS v_0
> {code}
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