Re: citext on exclude using gist - Mailing list pgsql-general

From David G. Johnston
Subject Re: citext on exclude using gist
Date
Msg-id CAKFQuwaGbD2pwByRwBrmtSHQ_VQzL+vGz9pJWbAjXkdShjHWFw@mail.gmail.com
Whole thread Raw
In response to Re: citext on exclude using gist  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-general
On Tue, Jul 19, 2022 at 4:43 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
Jean Carlo Giambastiani Lopes <jean.lopes@hotmail.com.br> writes:
> I'm trying to use a citext column in the following manner without success:

> create extension btree_gist;
> create extension citext;
> create table my_table(
>     foo citext,
>     bar numrange,
>     primary key (foo, bar),
>     exclude using gist (foo with =, bar with &&)
> );

> is this possible? If so, what's wrong on this snippet?

btree_gist knows nothing of citext, so it's not providing any suitable
operator class.

(Code-wise it probably wouldn't be that hard to add, but I see no good way
to deal with the inter-extension connection other than to give btree_gist
a hard dependency on citext, which people wouldn't appreciate too much.)


I'd expect that creating a "btree_gist_citext" extension would provide a pathway forward here.  IIUC, it could even depend on the two extensions it is expanding upon.

David J.

pgsql-general by date:

Previous
From: Imre Samu
Date:
Subject: Re: postgis
Next
From: Marc Millas
Date:
Subject: Re: postgis