From: | Erik Rijkers <er(at)xs4all(dot)nl> |
---|---|
To: | Tatsuo Ishii <ishii(at)sraoss(dot)co(dot)jp>, vik(at)postgresfriends(dot)org |
Cc: | pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: Row pattern recognition |
Date: | 2023-09-22 08:23:11 |
Message-ID: | f1b24ec2-9b36-90f3-8c58-83c70991f9d8@xs4all.nl |
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Lists: | pgsql-hackers |
Op 9/22/23 om 07:16 schreef Tatsuo Ishii:
>> Attached is the fix against v6 patch. I will include this in upcoming v7 patch.
>
> Attached is the v7 patch. It includes the fix mentioned above. Also
(Champion's address bounced; removed)
Hi,
In my hands, make check fails on the rpr test; see attached .diff file.
In these two statements:
-- using NEXT
-- using AFTER MATCH SKIP TO NEXT ROW
result of first_value(price) and next_value(price) are empty.
Erik Rijkers
> this time the pattern matching engine is enhanced: previously it
> recursed to row direction, which means if the number of rows in a
> frame is large, it could exceed the limit of stack depth. The new
> version recurses over matched pattern variables in a row, which is at
> most 26 which should be small enough.
>
> Best reagards,
> --
> Tatsuo Ishii
> SRA OSS LLC
> English: http://www.sraoss.co.jp/index_en/
> Japanese:http://www.sraoss.co.jp
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