Re: psql: Greatly speed up "\d tablename" when not using regexes - Mailing list pgsql-hackers

From Jelte Fennema-Nio
Subject Re: psql: Greatly speed up "\d tablename" when not using regexes
Date
Msg-id CAGECzQT70CNxDm+ZWJXL_f_=Q0Sr04YtaUo9PZMmEmxPjHh+DA@mail.gmail.com
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In response to Re: psql: Greatly speed up "\d tablename" when not using regexes  (Kirill Reshke <reshkekirill@gmail.com>)
Responses Re: psql: Greatly speed up "\d tablename" when not using regexes  (Kirill Reshke <reshkekirill@gmail.com>)
List pgsql-hackers
On Wed, 10 Apr 2024 at 20:21, Kirill Reshke <reshkekirill@gmail.com> wrote:
> Do we need to force Collaction here like in other branches?
> if (PQserverVersion(conn) >= 120000)
>    appendPQExpBufferStr(buf, " COLLATE pg_catalog.default");

According to the commit and codecomment that introduced the COLLATE,
it was specifically added for correct regex matching (e.g. \w). So I
don't think it's necessary, and I'm pretty sure adding it will cause
the index scan not to be used anymore.



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