Re: Row pattern recognition

2026년 1월 17일 (토) 17:19, Tatsuo Ishii <ishii(at)postgresql(dot)org>님이 작성:

> Hi Henson,
>
> > I'm now reviewing the remaining parts: pattern optimization in planner,
> > absorption function, and step function. Once the review is complete,
> > I'll send the rest of the patches.
>
> I am reviewing the test cases and found this:
>
> SELECT * FROM (SELECT 1 AS x) t
> WINDOW w AS (
> ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
> PATTERN (a b c d e f g h i j k l m n o p q r s t u v w x y z aa)
> DEFINE a AS TRUE
> );
> ERROR: number of row pattern definition variable names exceeds 26
>
> I thought you have eliminated the 26 variables limit. If so, related
> codes using WindowClause->defineInitial should be removed. Shall I do
> that? Or you want to do that while refactoring?
>

Already found and cleaned up.
Will include it in the next patch.​​​​​​​​​​​​​​​​

> Best regards,
> --
> Tatsuo Ishii
> SRA OSS K.K.
> English: http://www.sraoss.co.jp/index_en/
> Japanese:http://www.sraoss.co.jp
>