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Author SHA1 Message Date
Tom Lane b813d143ae Alter scale selection for NUMERIC division and transcendental functions 
so that precision of result is always at least as good as you'd get from
float8 arithmetic (ie, always at least 16 digits of accuracy).  Per
pg_hackers discussion a few days ago.
 2002-10-02 19:21:26 +00:00
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
Tom Lane 2ae20ef98a Update regression tests for ONLY and other recent changes. 2000-06-10 05:19:26 +00:00
Tom Lane 260b6afc79 Update remaining tests for new psql, with the exception of 'arrays', 
which is broken in some weird way that I don't understand.  I think it
may be exposing a bug in the new psql --- for one thing, I get different
results when I run psql by hand than the regress script gets.  What
the heck???
 2000-01-09 03:48:39 +00:00
Tom Lane a8ae19ec3d aggregate(DISTINCT ...) works, per SQL spec. 
Note this forces initdb because of change of Aggref node in stored rules.
 1999-12-13 01:27:21 +00:00
Thomas G. Lockhart 1594bf2a93 Added initial set of expected outputs for new regression testing. 
Modified a few tests to match results on RedHat Linux/gcc for v6.1beta.
 1997-04-29 14:23:51 +00:00