| From: | Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com> |
|---|---|
| To: | Shaozhong SHI <shishaozhong(at)gmail(dot)com>, pgsql-general <pgsql-general(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: how to find out field size? |
| Date: | 2022-04-04 15:37:19 |
| Message-ID: | 0c02aafa-6079-d6ad-fa1d-a3c36cb8cd19@aklaver.com |
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| Lists: | pgsql-general |
On 4/4/22 08:28, Shaozhong SHI wrote:
> Postgres documentation says: maximum field size is 1 GB.
> PostgreSQL: Documentation: 12: Appendix K. PostgreSQL Limits
> <https://www.postgresql.org/docs/12/limits.html>
>
> So, how to find out the size of column to see how far it from the limit?
Documentation also shows:
https://www.postgresql.org/docs/current/functions-admin.html
pg_column_size ( "any" ) → integer
Shows the number of bytes used to store any individual data value. If
applied directly to a table column value, this reflects any compression
that was done.
>
> Regards,
>
> David
>
--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com
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