Re: Get table catalog from pg_indexes

Thx, Adrian.

On Sun, Nov 27, 2022 at 3:56 PM Adrian Klaver <adrian.klaver@aklaver.com> wrote:
>
> On 11/27/22 13:31, Ron wrote:
> > On 11/27/22 11:22, Igor Korot wrote:
> >> Hi, ALL,
> >> Table pg_indexes does not contain a field for a catalog.
> >>
> >> So how do I get that?
> >>
> >> SELECT 1 FROM pg_indexes WHERE indexname = $1 AND tablename = $2 AND
> >> schemaname = $3
> >
> > You did not look hard enough, or Google "postgresql pg_indexes".
> >
> > test=# \d pg_indexes
> >              View "pg_catalog.pg_indexes"
> >     Column   | Type | Collation | Nullable | Default
> > ------------+------+-----------+----------+---------
> > *schemaname* | name | |          |
> > *tablename*  | name | |          |
> > *indexname*  | name | |          |
> >   tablespace | name |           |          |
> >   indexdef   | text |           |          |
> >
> > https://www.postgresql.org/docs/current/view-pg-indexes.html
>
> What the OP was looking for a field in the above that was catalogname or
> datname per:
>
> https://www.postgresql.org/docs/current/catalog-pg-database.html
>
> Table "pg_catalog.pg_database"
>      Column     |   Type    | Collation | Nullable | Default
> ---------------+-----------+-----------+----------+---------
>   oid           | oid       |           | not null |
>   datname       | name      |           | not null |
> ...
>
> In other words to filter the pg_index results by database/catalog name.
> Since pg_index is scoped to the database you are in when you do the
> query that is not going to happen.
>
> >
> >
> >
> >
> > --
> > Angular momentum makes the world go 'round.
>
> --
> Adrian Klaver
> adrian.klaver@aklaver.com
>
>
>