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https://issues.apache.org/jira/browse/CALCITE-631?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14388684#comment-14388684
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Julian Hyde commented on CALCITE-631:
-------------------------------------
Before I review this patch... Does your patch cause substantially more tests to
run in the JDBC data source rather than in-memory collections? Does the test
suite run any slower? If so, I won't accept it. The purpose of the test suite
is to test Calcite, and it needs to be fast.
> Push theta joins down to JDBC adapter
> -------------------------------------
>
> Key: CALCITE-631
> URL: https://issues.apache.org/jira/browse/CALCITE-631
> Project: Calcite
> Issue Type: Improvement
> Reporter: Ng Jiunn Jye
> Assignee: Julian Hyde
> Fix For: next
>
> Attachments: [CALCITE-631]-PushThetaJoinsDownToJDBCAdapter.patch,
> [CALCITE-631]JdbcJoinToSupportNonEquiJoin.2.patch,
> [CALCITE-631]JdbcJoinToSupportNonEquiJoin.patch
>
>
> Currently, the JdbcJoin only support EquiJoin. ie select * from tab1 inner
> join tab2 on tab1.col1=tab2.col2
> NonEqui join are not supported in JdbcJoin, thus resulting execution plan
> which uses EnumerationJoin and EnumerableCalc for joining and not pushing the
> join down to remote database.
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