10:07 a.m.
Salvatore R created TEIID-3949:
----------------------------------
Summary: Subqueries are wrongly pushed down to the underlying datasource
Key: TEIID-3949
URL: https://issues.jboss.org/browse/TEIID-3949
Project: Teiid
Issue Type: Bug
Reporter: Salvatore R
Assignee: Steven Hawkins
I have two schemas, one in PostgreSQL and another one in MySQL, called "my" and
"pg" respectively.
I defined the following tables in PG:
{code:sql}
CREATE TABLE test_a (a integer, b integer);
CREATE TABLE test_only_pg (a integer, b integer);
{code}
and this table in MySQL:
{code:sql}
CREATE TABLE `test_b` (
`b` int(11),
`c` int(11)
)
{code}
When I run this query:
{code:sql}
SELECT
SUM(x.b - (SELECT a FROM pg.test_only_pg WHERE b = 1))
FROM my.test_b x
INNER JOIN pg.test_a y ON x.b = y.b
{code}
I get the following exception:
{code:sql}
16:44:54,776 WARN [org.teiid.CONNECTOR] (Worker2_QueryProcessorQueue28) QWfZdmacM17x
Connector worker process failed for atomic-request=QWfZdmacM17x.12.7.4:
org.teiid.translator.jdbc.JDBCExecutionException: 1146 TEIID11008:TEIID11004 Error
executing statement(s): [Prepared Values: [] SQL: SELECT g_0.`b` AS c_0, SUM((g_0.`b` -
(SELECT g_1."a" AS c_0 FROM "public"."test_only_pg" AS g_1
WHERE g_1."b" = 1 LIMIT 2))) AS c_1 FROM `test_tables`.`test_b` AS g_0 GROUP BY
g_0.`b` ORDER BY c_0]
at
org.teiid.translator.jdbc.JDBCQueryExecution.execute(JDBCQueryExecution.java:131)
[translator-jdbc-8.12.4.jar:8.12.4]
at
org.teiid.dqp.internal.datamgr.ConnectorWorkItem.execute(ConnectorWorkItem.java:356)
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:306)
at
org.teiid.dqp.internal.process.DataTierTupleSource$1.call(DataTierTupleSource.java:112)
at
org.teiid.dqp.internal.process.DataTierTupleSource$1.call(DataTierTupleSource.java:108)
at java.util.concurrent.FutureTask.run(FutureTask.java:262) [rt.jar:1.7.0_67]
at org.teiid.dqp.internal.process.FutureWork.run(FutureWork.java:65)
at
org.teiid.dqp.internal.process.DQPWorkContext.runInContext(DQPWorkContext.java:276)
at
org.teiid.dqp.internal.process.ThreadReuseExecutor$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: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table
'public.test_only_pg' doesn't exist
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
[rt.jar:1.7.0_67]
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
[rt.jar:1.7.0_67]
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
[rt.jar:1.7.0_67]
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
[rt.jar:1.7.0_67]
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.Util.getInstance(Util.java:386)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1053)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4096)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4028)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2490)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2651)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2734)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322)
at
org.jboss.jca.adapters.jdbc.WrappedPreparedStatement.executeQuery(WrappedPreparedStatement.java:462)
at
org.teiid.translator.jdbc.JDBCQueryExecution.execute(JDBCQueryExecution.java:123)
[translator-jdbc-8.12.4.jar:8.12.4]
... 18 more
{code}
I could reproduce this behavior in Teiid 8.12.4.
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