mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-09-04 08:17:19 +02:00
var_samp(), stddev_pop(), and stddev_samp(). var_samp() and stddev_samp() are just renamings of the historical Postgres aggregates variance() and stddev() -- the latter names have been kept for backward compatibility. This patch includes updates for the documentation and regression tests. The catversion has been bumped. NB: SQL2003 requires that DISTINCT not be specified for any of these aggregates. Per discussion on -patches, I have NOT implemented this restriction: if the user asks for stddev(DISTINCT x), presumably they know what they are doing. |
||
---|---|---|
.. | ||
FAQ | ||
sgml | ||
Makefile |