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https://issues.apache.org/jira/browse/CALCITE-1501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15685812#comment-15685812
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Dayue Gao commented on CALCITE-1501:
------------------------------------
[~julianhyde] PR ready to be review.
My previous test approach didn't work because after {{planner.setRoot}},
PhaseMatchList in RuleQueue is finalized and won't be modified by
{{planner.removeRule}}.
To overcome this, I add Hook.PLANNER so that tests can add or remove rules
easily.
> EnumerableUnion should use array comparator when row type is ARRAY
> ------------------------------------------------------------------
>
> Key: CALCITE-1501
> URL: https://issues.apache.org/jira/browse/CALCITE-1501
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.10.0
> Reporter: Dayue Gao
> Assignee: Julian Hyde
>
> Reproduce using cvs adaptor example
> {noformat}
> 0: jdbc:calcite:model=target/test-classes/mod> select count(*), max(deptno)
> from emps e1 union select count(*), max(deptno) from emps e2;
> +---------------------+--------+
> | EXPR$0 | EXPR$1 |
> +---------------------+--------+
> | 5 | 40 |
> | 5 | 40 |
> +---------------------+--------+
> {noformat}
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