diff options
| 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/utils/adt/cash.c | |
| parent | d89578ccbefb83aa9f9d1c00269cd866be2cc857 (diff) | |
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/utils/adt/cash.c')
| -rw-r--r-- | src/backend/utils/adt/cash.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/src/backend/utils/adt/cash.c b/src/backend/utils/adt/cash.c index e33aad28d64..c4fc14134f0 100644 --- a/src/backend/utils/adt/cash.c +++ b/src/backend/utils/adt/cash.c @@ -9,7 +9,7 @@ * workings can be found in the book "Software Solutions in C" by * Dale Schumacher, Academic Press, ISBN: 0-12-632360-7. * - * $Header: /cvsroot/pgsql/src/backend/utils/adt/cash.c,v 1.59 2003/07/27 04:53:03 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/utils/adt/cash.c,v 1.60 2003/08/17 19:58:05 tgl Exp $ */ #include "postgres.h" @@ -342,6 +342,9 @@ cash_send(PG_FUNCTION_ARGS) PG_RETURN_BYTEA_P(pq_endtypsend(&buf)); } +/* + * Comparison functions + */ Datum cash_eq(PG_FUNCTION_ARGS) @@ -397,6 +400,20 @@ cash_ge(PG_FUNCTION_ARGS) PG_RETURN_BOOL(c1 >= c2); } +Datum +cash_cmp(PG_FUNCTION_ARGS) +{ + Cash c1 = PG_GETARG_CASH(0); + Cash c2 = PG_GETARG_CASH(1); + + if (c1 > c2) + PG_RETURN_INT32(1); + else if (c1 == c2) + PG_RETURN_INT32(0); + else + PG_RETURN_INT32(-1); +} + /* cash_pl() * Add two cash values. |