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[CALCITE-7486] Operators in MATCH_RECOGNIZE don't support SqlLiterals#4907

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snuyanzin merged 2 commits intoapache:mainfrom
snuyanzin:calcite7486
Apr 24, 2026
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[CALCITE-7486] Operators in MATCH_RECOGNIZE don't support SqlLiterals#4907
snuyanzin merged 2 commits intoapache:mainfrom
snuyanzin:calcite7486

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@snuyanzin
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CALCITE-7486

This PR is based on #4899

Changes Proposed

In case of literals there might be unparsed SQL produced

like for the case

SELECT *
FROM emp
MATCH_RECOGNIZE (
  MEASURES
    FIRST(DOWN.empno + DOWN.deptno + 1) AS bottom_total
  PATTERN (DOWN{2,})
  DEFINE
    DOWN AS EMP.EMPNO < 1
)

there will unparsed version

SELECT `EXPR$0`.`BOTTOM_TOTAL`
FROM `CATALOG`.`SALES`.`EMP` AS `EMP` MATCH_RECOGNIZE(
MEASURES FINAL (FIRST(`DOWN`.`EMPNO` + `DOWN`.`DEPTNO`, 0) + FIRST(1, 0)) AS `BOTTOM_TOTAL`
PATTERN (`DOWN` { 2, })
DEFINE `DOWN` AS `EMP`.`EMPNO` < 1) AS `EXPR$0

FIRST(1, 0) is failing right now, the PR makes it tolerant to such calls, same for other MATCH_RECOGNIZE operators like PREV, NEXT, LAST

@sonarqubecloud
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@snuyanzin snuyanzin merged commit bda5286 into apache:main Apr 24, 2026
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2 participants