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https://issues.apache.org/jira/browse/FLINK-6429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16110339#comment-16110339
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ASF GitHub Bot commented on FLINK-6429:
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Github user dianfu commented on the issue:
https://github.com/apache/flink/pull/4373
I have did some investigation of the test failure of
**JoinITCase.testJoinWithExpressionPreds** and would like to share my findings
and solutions for your reference. The cause of this issue is that for preserved
expressions, in **PushProjector#createProjectRefsAndExprs**, the column names
corresponding to them will be the operator names of the expressions. For
example for expression **a - 1** in the test case, the column corresponding to
it will be **-**. I think this behavior is not expected and have copied
**PushProjector** from calcite and made some changes to it (line 507). Please
refer to
[here](https://github.com/dianfu/flink/commit/efa9641e0bd395a3679b0d496b60e3d42aa7b832)
for more information.
For the files copied from calcite, all files can be removed except
**SqlTimestampAddFunction** and **AuxiliaryConverter**.
> Bump up Calcite version to 1.13
> -------------------------------
>
> Key: FLINK-6429
> URL: https://issues.apache.org/jira/browse/FLINK-6429
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Reporter: Timo Walther
> Assignee: Haohui Mai
>
> This is an umbrella issue for all tasks that need to be done once Apache
> Calcite 1.13 is released.
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