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Author SHA1 Message Date
Tom Lane 88ba401879 Update EXPLAIN discussion and examples to match current sources. 2001-06-11 00:52:09 +00:00
Peter Eisentraut a6677f0f9e Change "indices" to "indexes", per OED. 2001-05-17 21:50:18 +00:00
Tom Lane 6cda3ad8fe Cause planner to make use of average-column-width statistic that is now 
collected by ANALYZE.  Also, add some modest amount of intelligence to
guesses that are used for varlena columns in the absence of any ANALYZE
statistics.  The 'width' reported by EXPLAIN is finally something less
than totally bogus for varlena columns ... and, in consequence, hashjoin
estimating should be a little better ...
 2001-05-09 00:35:09 +00:00
Peter Eisentraut 0967057b5d minor copy editing 2001-03-24 23:03:26 +00:00
Tom Lane a276392e52 Update example of partially constraining join order to use a subselect 
in FROM instead of an auxiliary view.  We didn't have subselect-in-FROM
when I wrote this originally...
 2001-02-19 00:24:30 +00:00
Tom Lane ad4fd77a5f Restructure performance tips into a single chapter ('populating a 
database' was way too small to make a chapter).  Add a section about
using JOIN syntax to direct the planner.
 2000-12-16 02:29:36 +00:00