Jiajun Xie created CALCITE-5013:
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Summary: Parentheses should be reserved when the operand of SetOp
has limit or offset
Key: CALCITE-5013
URL: https://issues.apache.org/jira/browse/CALCITE-5013
Project: Calcite
Issue Type: Bug
Components: core
Reporter: Jiajun Xie
- In standard SQL, the operand of union should not have limit or order by.So
parse will fail in SqlParserTetest#testLimitUnion and
SqlParserTetest#OrderUnion.
- When users use parentheses, most engines allow it. See the
discussion:[CALCITE-1892|https://issues.apache.org/jira/browse/CALCITE-1892].
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