Search Postgresql Archives

Short-circuit boolean evaluation

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi,

Does Postgresql perform short-circuit boolean evaluation both in SQL
and PL/pgSQL functions?  As an example, suppose I have a function called
"do_stuff" which is computationally intensive.  In the example below,
will it be called for rows for which the first predicate (foobar.id = $1)
is false?

SELECT count(*) FROM foobar WHERE foobar.id = $1 AND do_stuff (foobar.name);

Thanks!
Jon


-- 
Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux