Ruben Q L created CALCITE-4042:
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Summary: JoinCommuteRule should not match SEMI / ANTI join
Key: CALCITE-4042
URL: https://issues.apache.org/jira/browse/CALCITE-4042
Project: Calcite
Issue Type: Bug
Components: core
Affects Versions: 1.23.0
Reporter: Ruben Q L
Assignee: Ruben Q L
Fix For: 1.24.0
JoinCommuteRule should not match SEMI / ANTI join, because these types cannot
be swapped.
This is a minor issue, because the "default" JoinCommuteRule.INSTANCE matches
only INNER joins. However, there is another version of the rule
(JoinCommuteRule.SWAP_OUTER, currently only used in a few unit tests), to match
also outer joins, which could potentially match a SEMI / ANTI join.
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