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https://issues.apache.org/jira/browse/CALCITE-7734?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sergey Nuyanzin updated CALCITE-7734:
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Environment: (was: An unqualified {{MEASURES}}/{{DEFINE}} column is
expanded to {{<table>.<col>}}, so the pattern-variable alpha becomes the table
name (e.g. {{LAST(emps.$4)}}) instead of the universal row pattern variable *
({{LAST(*.$4)}}). A table name is not
a pattern variable, so the plan cannot be implemented.
for instance
{code:sql}
SELECT * FROM "hr"."emps" match_recognize (
ORDER BY "empid" DESC
MEASURES "commission" AS c
PATTERN (s up)
DEFINE up AS "commission" < prev("commission"))
{code}
produces plan containing
{{LAST(emps.$4, ...)}} instead of {{LAST(*.$4, ...)}}
)
> MATCH_RECOGNIZE with an unqualified column in MEASURES/DEFINE produces an
> unusable plan
> ---------------------------------------------------------------------------------------
>
> Key: CALCITE-7734
> URL: https://issues.apache.org/jira/browse/CALCITE-7734
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: Sergey Nuyanzin
> Assignee: Sergey Nuyanzin
> Priority: Major
>
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