Tom Lane 5b51683589 Improve documentation about CASE and constant subexpressions. ... The possibility that constant subexpressions of a CASE might be evaluated at planning time was touched on in 9.17.1 (CASE expressions), but it really ought to be explained in 4.2.14 (Expression Evaluation Rules) which is the primary discussion of such topics. Add text and an example there, and revise the <note> under CASE to link there. Back-patch to all supported branches, since it's acted like this for a long time (though 9.2+ is probably worse because of its more aggressive use of constant-folding via replanning of nominally-prepared statements). Pre-9.4, also back-patch text added in commit 0ce627d4 about CASE versus aggregate functions. Tom Lane and David Johnston, per discussion of bug #12273.		2014-12-18 16:39:20 -05:00
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src	Improve documentation about CASE and constant subexpressions.	2014-12-18 16:39:20 -05:00
bug.template	Stamp HEAD as 9.5devel.	2014-06-10 21:36:13 -04:00
KNOWN_BUGS
Makefile
MISSING_FEATURES
TODO