On Fri, 4 Jul 2008, Teodor Sigaev wrote:
What's the benefit of a multi-column GIN index over multiple
single-column GIN indexes?
Page 12 from presentation on PgCon
(http://www.sigaev.ru/gin/fastinsert_and_multicolumn_GIN.pdf):
Multicolumn index vs. 2 single column indexes
Size: 539 Mb 538 Mb
Speed: *1.885* ms 4.994 ms
Index: ~340 s ~200 s
Insert: 72 s/10000 66 s/10000
Well, another reason is a index feature-completeness
Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru),
Sternberg Astronomical Institute, Moscow University, Russia
Internet: [EMAIL PROTECTED], http://www.sai.msu.su/~megera/
phone: +007(495)939-16-83, +007(495)939-23-83
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