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Posted to issues@calcite.apache.org by "zzwqqq (Jira)" <ji...@apache.org> on 2026/06/05 08:14:00 UTC

[jira] [Created] (CALCITE-7585) MERGE may unparse EXISTS predicates in ON clause without parentheses

zzwqqq created CALCITE-7585:
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             Summary: MERGE may unparse EXISTS predicates in ON clause without parentheses
                 Key: CALCITE-7585
                 URL: https://issues.apache.org/jira/browse/CALCITE-7585
             Project: Calcite
          Issue Type: Bug
            Reporter: zzwqqq
            Assignee: zzwqqq


https://github.com/apache/calcite/pull/4969 fixes unparsing of EXISTS subqueries in UPDATE and DELETE statements. 

During review, it was pointed out that MERGE may have a similar problem because EXISTS predicates can appear in the ON clause. 

This has not been fully confirmed yet. This issue is opened to track the potential MERGE case separately. If confirmed, MERGE should use the same parenthesized unparsing behavior and include regression tests.



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