8 Commits (be2f825d51176bd21a627a529476f94de5bad4c2)

Author	SHA1	Message	Date
Bruce Momjian	7d78bac108	Back out BETWEEN node patch, was causing initdb failure.	24 years ago
Bruce Momjian	3e22406ec6	Finished the Between patch Christopher started. ... Implements between (symmetric / asymmetric) as a node. Executes the left or right expression once, makes a Const out of the resulting Datum and executes the >=, <= portions out of the Const sets. Of course, the parser does a fair amount of preparatory work for this to happen. Rod Taylor	24 years ago
Tom Lane	f31dc0ada7	Partial indexes work again, courtesy of Martijn van Oosterhout. ... Note: I didn't force an initdb, figuring that one today was enough. However, there is a new function in pg_proc.h, and pg_dump won't be able to dump partial indexes until you add that function.	25 years ago
Tom Lane	b1577a7c78	New cost model for planning, incorporating a penalty for random page ... accesses versus sequential accesses, a (very crude) estimate of the effects of caching on random page accesses, and cost to evaluate WHERE- clause expressions. Export critical parameters for this model as SET variables. Also, create SET variables for the planner's enable flags (enable_seqscan, enable_indexscan, etc) so that these can be controlled more conveniently than via PGOPTIONS. Planner now estimates both startup cost (cost before retrieving first tuple) and total cost of each path, so it can optimize queries with LIMIT on a reasonable basis by interpolating between these costs. Same facility is a win for EXISTS(...) subqueries and some other cases. Redesign pathkey representation to achieve a major speedup in planning (I saw as much as 5X on a 10-way join); also minor changes in planner to reduce memory consumption by recycling discarded Path nodes and not constructing unnecessary lists. Minor cleanups to display more-plausible costs in some cases in EXPLAIN output. Initdb forced by change in interface to index cost estimation functions.	26 years ago
Thomas G. Lockhart	d1e6368816	Clean up header for uniform appearance throughout tests.	26 years ago
Bruce Momjian	4390b0bfbe	Add TEMP tables/indexes. Add COPY pfree(). Other cleanups.	27 years ago
Thomas G. Lockhart	68cd097e89	Change ORDER BY to get more consistant results.	29 years ago
Marc G. Fournier	e31cb4be3a	More splits and cleanups... ... Its starting to actually take shape and look as expected...	29 years ago