Commit Graph

12 Commits

Author SHA1 Message Date
Tom Lane
6e2f3ae884 Support LIKE and ILIKE index searches via contrib/pg_trgm indexes.
Unlike Btree-based LIKE optimization, this works for non-left-anchored
search patterns.  The effectiveness of the search depends on how many
trigrams can be extracted from the pattern.  (The worst case, with no
trigrams, degrades to a full-table scan, so this isn't a panacea.  But
it can be very useful.)

Alexander Korotkov, reviewed by Jan Urbanski
2011-01-31 21:34:49 -05:00
Tom Lane
be0c3ea2d3 Update contrib/pg_trgm for new GIN extractQuery API.
No actual change in functionality ... just get rid of uselessly complex
code to pass the number of keys via extra_data.
2011-01-09 18:04:20 -05:00
Tom Lane
b525bf771e Add KNNGIST support to contrib/pg_trgm.
Teodor Sigaev, with some revision by Tom
2010-12-04 00:16:21 -05:00
Magnus Hagander
9f2e211386 Remove cvs keywords from all files. 2010-09-20 22:08:53 +02:00
Bruce Momjian
d747140279 8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list
provided by Andrew.
2009-06-11 14:49:15 +00:00
Tom Lane
87b8db3774 Adjust the APIs for GIN opclass support functions to allow the extractQuery()
method to pass extra data to the consistent() and comparePartial() methods.
This is the core infrastructure needed to support the soon-to-appear
contrib/btree_gin module.  The APIs are still upward compatible with the
definitions used in 8.3 and before, although *not* with the previous 8.4devel
function definitions.

catversion bump for changes in pg_proc entries (although these are just
cosmetic, since GIN doesn't actually look at the function signature before
calling it...)

Teodor Sigaev and Oleg Bartunov
2009-03-25 22:19:02 +00:00
Teodor Sigaev
b87b52bf04 Support of multibyte encoding for pg_trgm 2008-11-12 13:43:54 +00:00
Teodor Sigaev
2d6599f471 Add caching of query to GIN/GiST consistent function.
Per performance gripe from nomao.com
2008-07-11 11:56:48 +00:00
Andrew Dunstan
53972b460c Add $PostgreSQL$ markers to a lot of files that were missing them.
This particular batch was just for *.c and *.h file.

The changes were made with the following 2 commands:

find . \( \( -name 'libstemmer' -o -name 'expected' -o -name 'ppport.h' \) -prune \) -o  \( -name '*.[ch]'  \) \( -exec grep -q '\$PostgreSQL' {} \; -o -print \) | while read file ; do head -n 1 < $file | grep -q '^/\*' && echo $file; done | xargs -l sed -i -e '1s/^\// /' -e '1i/*\n * $PostgreSQL:$ \n *'

find . \( \( -name 'libstemmer' -o -name 'expected' -o -name 'ppport.h' \) -prune \) -o  \( -name '*.[ch]'  \) \( -exec grep -q '\$PostgreSQL' {} \; -o -print \) | xargs -l sed -i -e '1i/*\n * $PostgreSQL:$ \n */'
2008-05-17 01:28:26 +00:00
Tom Lane
9b5c8d45f6 Push index operator lossiness determination down to GIST/GIN opclass
"consistent" functions, and remove pg_amop.opreqcheck, as per recent
discussion.  The main immediate benefit of this is that we no longer need
8.3's ugly hack of requiring @@@ rather than @@ to test weight-using tsquery
searches on GIN indexes.  In future it should be possible to optimize some
other queries better than is done now, by detecting at runtime whether the
index match is exact or not.

Tom Lane, after an idea of Heikki's, and with some help from Teodor.
2008-04-14 17:05:34 +00:00
Bruce Momjian
fdf5a5efb7 pgindent run for 8.3. 2007-11-15 21:14:46 +00:00
Teodor Sigaev
15f91f2789 Add GIN support for pg_trgm. From Guillaume Smet <guillaume.smet@gmail.com>
with minor editorization by me.
2007-03-14 14:15:40 +00:00