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15 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
Tom Lane badce86a2c First stage of reclaiming memory in executor by resetting short-term 
memory contexts.  Currently, only leaks in expressions executed as
quals or projections are handled.  Clean up some old dead cruft in
executor while at it --- unused fields in state nodes, that sort of thing.
 2000-07-12 02:37:39 +00:00
Bruce Momjian 5c25d60244 Add: 
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc

to all files copyright Regents of Berkeley.  Man, that's a lot of files.
 2000-01-26 05:58:53 +00:00
Tom Lane 6d1efd76fb Fix handling of NULL constraint conditions: per SQL92 spec, a NULL result 
from a constraint condition does not violate the constraint (cf. discussion
on pghackers 12/9/99).  Implemented by adding a parameter to ExecQual,
specifying whether to return TRUE or FALSE when the qual result is
really NULL in three-valued boolean logic.  Currently, ExecRelCheck is
the only caller that asks for TRUE, but if we find any other places that
have the wrong response to NULL, it'll be easy to fix them.
 2000-01-19 23:55:03 +00:00
Bruce Momjian 07842084fe pgindent run over code. 1999-05-25 16:15:34 +00:00
Bruce Momjian 7d0ab659ac Fix for aggregate memory leaks from Erik Riedel. 1999-03-20 01:13:22 +00:00
Bruce Momjian 6724a50787 Change my-function-name-- to my_function_name, and optimizer renames. 1999-02-13 23:22:53 +00:00
Bruce Momjian a32450a585 pgindent run before 6.3 release, with Thomas' requested changes. 1998-02-26 04:46:47 +00:00
Thomas G. Lockhart 6c1abf0d3c Fix from Vadim for simple-minded case SELECT 1 WHERE 1 IN (SELECT 1) 
used in regression tests. No longer core dumps.
 1998-02-18 07:19:34 +00:00
Vadim B. Mikheev 1a105cefbd Support for subselects. 
ExecReScan for nodeAgg, nodeHash, nodeHashjoin, nodeNestloop and nodeResult.
Fixed ExecReScan for nodeMaterial.
Get rid of #ifdef INDEXSCAN_PATCH.
Get rid of ExecMarkPos and ExecRestrPos in nodeNestloop.
 1998-02-13 03:26:53 +00:00
Bruce Momjian 59f6a57e59 Used modified version of indent that understands over 100 typedefs. 1997-09-08 21:56:23 +00:00
Bruce Momjian 319dbfa736 Another PGINDENT run that changes variable indenting and case label indenting. Also static variable indenting. 1997-09-08 02:41:22 +00:00
Bruce Momjian 1ccd423235 Massive commit to run PGINDENT on all *.c and *.h files. 1997-09-07 05:04:48 +00:00
Marc G. Fournier 3df33180a1 add #include "postgres.h", as required by all .c files 1996-10-31 10:12:26 +00:00
Marc G. Fournier d31084e9d1 Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 06:22:35 +00:00