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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2003-08-17 19:58:06 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2003-08-17 19:58:06 +0000 |
| commit | ec646dbc65afc8c55118cb3fb75cb6fd18d78dd8 (patch) | |
| tree | bd256cf157c4636382d59938162326fccc70b62c /src/backend/commands/opclasscmds.c | |
| parent | d89578ccbefb83aa9f9d1c00269cd866be2cc857 (diff) | |
| download | postgresql-ec646dbc65afc8c55118cb3fb75cb6fd18d78dd8.tar.gz postgresql-ec646dbc65afc8c55118cb3fb75cb6fd18d78dd8.zip | |
Create a 'type cache' that keeps track of the data needed for any particular
datatype by array_eq and array_cmp; use this to solve problems with memory
leaks in array indexing support. The parser's equality_oper and ordering_oper
routines also use the cache. Change the operator search algorithms to look
for appropriate btree or hash index opclasses, instead of assuming operators
named '<' or '=' have the right semantics. (ORDER BY ASC/DESC now also look
at opclasses, instead of assuming '<' and '>' are the right things.) Add
several more index opclasses so that there is no regression in functionality
for base datatypes. initdb forced due to catalog additions.
Diffstat (limited to 'src/backend/commands/opclasscmds.c')
| -rw-r--r-- | src/backend/commands/opclasscmds.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/backend/commands/opclasscmds.c b/src/backend/commands/opclasscmds.c index 0677751ead4..a93af3e6046 100644 --- a/src/backend/commands/opclasscmds.c +++ b/src/backend/commands/opclasscmds.c @@ -9,7 +9,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/commands/opclasscmds.c,v 1.17 2003/08/04 02:39:58 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/commands/opclasscmds.c,v 1.18 2003/08/17 19:58:04 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -261,7 +261,9 @@ DefineOpClass(CreateOpClassStmt *stmt) /* * If we are creating a default opclass, check there isn't one - * already. (XXX should we restrict this test to visible opclasses?) + * already. (Note we do not restrict this test to visible opclasses; + * this ensures that typcache.c can find unique solutions to its + * questions.) */ if (stmt->isDefault) { |