how to find out field size?

Started by Shaozhong SHIabout 4 years ago2 messagesgeneral
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#1Shaozhong SHI
shishaozhong@gmail.com

Postgres documentation says: maximum field size is 1 GB.
PostgreSQL: Documentation: 12: Appendix K. PostgreSQL Limits
<https://www.postgresql.org/docs/12/limits.html&gt;

So, how to find out the size of column to see how far it from the limit?

Regards,

David

#2Adrian Klaver
adrian.klaver@aklaver.com
In reply to: Shaozhong SHI (#1)
Re: how to find out field size?

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&gt;

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.klaver@aklaver.com