4 commits

Author	SHA1	Message	Date
Tom Lane	bec98a31c5	Revise aggregate functions per earlier discussions in pghackers. ... There's now only one transition value and transition function. NULL handling in aggregates is a lot cleaner. Also, use Numeric accumulators instead of integer accumulators for sum/avg on integer datatypes --- this avoids overflow at the cost of being a little slower. Implement VARIANCE() and STDDEV() aggregates in the standard backend. Also, enable new LIKE selectivity estimators by default. Unrelated change, but as long as I had to force initdb anyway...	2000-07-17 03:05:41 +00:00
Thomas G. Lockhart	c0cab6f4fa	Update format to add uniform headers on files.	2000-01-05 17:32:29 +00:00
Marc G. Fournier	e31cb4be3a	More splits and cleanups... ... Its starting to actually take shape and look as expected...	1997-04-06 08:29:57 +00:00
Marc G. Fournier	588ae64c44	More splits and cleanups...	1997-04-06 06:07:13 +00:00