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https://issues.apache.org/jira/browse/CALCITE-7465?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sergey Nuyanzin reassigned CALCITE-7465:
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Assignee: Sergey Nuyanzin (was: krooswu)
> Unparse of MATCH_RECOGNIZE with field forwards produce unparsable sql
> ---------------------------------------------------------------------
>
> Key: CALCITE-7465
> URL: https://issues.apache.org/jira/browse/CALCITE-7465
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: Sergey Nuyanzin
> Assignee: Sergey Nuyanzin
> Priority: Major
>
> It adds extra {{FINAL}} for every field forward at
> {{SqlValidatorImpl#navigationInMeasure}}
> the suggestion then make {{FINAL}} optional for each field
> {code:sql}
> SELECT *
> FROM emp
> MATCH_RECOGNIZE (
> MEASURES
> FINAL COUNT(A.deptno) AS deptno,
> FINAL A.ename AS ename
> PATTERN (A B)
> DEFINE
> A AS A.empno = 123
> ) AS T
> {code}
> is being rewritten to (added {{FINAL}})
> {code:sql}
> SELECT *
> FROM `EMP` MATCH_RECOGNIZE(
> MEASURES FINAL COUNT(`A`.`DEPTNO`) AS `DEPTNO`, FINAL `A`.`ENAME` AS `ENAME`
> PATTERN (`A` `B`)
> DEFINE `A` AS (PREV(`A`.`EMPNO`, 0) = 123)) AS `T`
> {code}
> At the same time an attempt to parse unparsed version will fail because of
> added {{FINAL}}
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