Improve documentation about function volatility: mention the snapshot

Tom Lane <tgl@sss.pgh.pa.us>

Commit: 253ff58a1d08127b9d61dffdaa6b4c3782828dbd
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2009-05-27T01:18:06Z
Releases: 8.4.0
Improve documentation about function volatility: mention the snapshot
visibility effects in a couple of places where people are likely to look
for it.  Per discussion of recent question from Karl Nack.

Files

PathChange+/−
doc/src/sgml/trigger.sgml modified +9 −1
doc/src/sgml/xfunc.sgml modified +35 −10