Uploaded image for project: 'Teiid'
  1. Teiid
  2. TEIID-3846

Wrong alias rewriting in subqueries

    Details

      Description

      I defined two tables in PostgreSQL (but it's reproducible also in other databases like MySQL, for example) as follows:

      CREATE TABLE test_a
      (
        a integer,
        b integer
      );
      CREATE TABLE test_b
      (
        b integer,
        c integer
      );
      

      Running this query:

      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
      

      I get the following exception:

      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
      

      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:

      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
      

        Gliffy Diagrams

          Attachments

            Activity

              People

              • Assignee:
                shawkins Steven Hawkins
                Reporter:
                fox123 Salvatore R
              • Votes:
                0 Vote for this issue
                Watchers:
                2 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: