| From: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
|---|---|
| To: | Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com> |
| Cc: | pgsql-general <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: Information schema sql_identifier |
| Date: | 2020-12-23 00:33:21 |
| Message-ID: | CAKFQuwbu2cHBEEyS_NBhXFouXAjPcMzG3iw5q7iJqudCaA+GQQ@mail.gmail.com |
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| Lists: | pgsql-general |
On Tue, Dec 22, 2020 at 5:08 PM Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>
wrote:
> SELECT pg_table_size(table_name::regclass) from information_schema.tables;
> ERROR: invalid name syntax
>
> So how does one go about using a table name from
> information_schema.tables in pg_table_size()?
>
Find that the function signature in the documentation requires an input of
"regclass" and ignore attempts to pass anything but that to the function.
pg_table_size ( regclass ) → bigint
I observe in v13 that the expected syntax works just fine:
select pg_table_size((table_schema || '.' || table_name)::regclass) from
information_schema.tables;
David J.
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