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Diffstat (limited to 'contrib/intarray/README.intarray')
| -rw-r--r-- | contrib/intarray/README.intarray | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/contrib/intarray/README.intarray b/contrib/intarray/README.intarray index 26cb082e3a7..8e292126c0e 100644 --- a/contrib/intarray/README.intarray +++ b/contrib/intarray/README.intarray @@ -1,10 +1,10 @@ This is an implementation of RD-tree data structure using GiST interface -of PostgreSQL. It has built-in lossy compression - must be declared -in index creation - with (islossy). Current implementation provides index -support for one-dimensional array of int4's - gist__int_ops, suitable for -small and medium size of arrays (used on default), and gist__intbig_ops for -indexing large arrays (we use superimposed signature with length of 4096 -bits to represent sets). +of PostgreSQL. It has built-in lossy compression. + +Current implementation provides index support for one-dimensional array of +int4's - gist__int_ops, suitable for small and medium size of arrays (used on +default), and gist__intbig_ops for indexing large arrays (we use superimposed +signature with length of 4096 bits to represent sets). All work was done by Teodor Sigaev (teodor@stack.net) and Oleg Bartunov (oleg@sai.msu.su). See http://www.sai.msu.su/~megera/postgres/gist @@ -35,7 +35,7 @@ EXAMPLE USAGE: -- create indices CREATE unique index message_key on message ( mid ); CREATE unique index message_section_map_key2 on message_section_map (sid, mid ); -CREATE INDEX message_rdtree_idx on message using gist ( sections gist__int_ops) with ( islossy ); +CREATE INDEX message_rdtree_idx on message using gist ( sections gist__int_ops); -- select some messages with section in 1 OR 2 - OVERLAP operator select message.mid from message where message.sections && '{1,2}'; |