From: Tom Lane <tgl@sss.pgh.pa.us>
To: Kenny Bachman <kenny.bachman17@gmail.com>
cc: pgsql-admin@lists.postgresql.org
Subject: Re: postrgesql query planner wrong desicion
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Comments: In-reply-to Kenny Bachman <kenny.bachman17@gmail.com>
	message dated "Fri, 17 Jun 2022 11:48:00 +0300"
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Date: Fri, 17 Jun 2022 10:19:32 -0400
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Kenny Bachman <kenny.bachman17@gmail.com> writes:
> With GIST Index: (Total exec time : 34s)

> Index Scan using "Pool_Party_Code_gist" on "Pool_Party"  (cost=0.28..8.30
> rows=1 width=4) (actual time=0.097..0.097 rows=1 loops=330870)
>                                        Index Cond: (("Code")::text =
> 'TEAM-FIXPOWERUSER'::text)

> Without GIST Index: (Total exec time: 4s)

> Index Scan using "Pool_Party_Code_idx" on "Pool_Party"  (cost=0.42..8.44
> rows=1 width=4) (actual time=0.007..0.007 rows=1 loops=330870)
>                                        Index Cond: (("Code")::text =
> 'TEAM-FIXPOWERUSER'::text)

Why do you have a gist index on a column that's apparently plain
text (or varchar)?  It seems kinda pointless, and the more so if
it duplicates a btree index.

			regards, tom lane