diff options
Diffstat (limited to 'contrib/btree_gist/btree_uuid.c')
| -rw-r--r-- | contrib/btree_gist/btree_uuid.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/contrib/btree_gist/btree_uuid.c b/contrib/btree_gist/btree_uuid.c index 02480808a4a..23a307a6a71 100644 --- a/contrib/btree_gist/btree_uuid.c +++ b/contrib/btree_gist/btree_uuid.c @@ -6,6 +6,7 @@ #include "btree_gist.h" #include "btree_utils_num.h" #include "port/pg_bswap.h" +#include "utils/sortsupport.h" #include "utils/uuid.h" typedef struct @@ -23,6 +24,7 @@ PG_FUNCTION_INFO_V1(gbt_uuid_picksplit); PG_FUNCTION_INFO_V1(gbt_uuid_consistent); PG_FUNCTION_INFO_V1(gbt_uuid_penalty); PG_FUNCTION_INFO_V1(gbt_uuid_same); +PG_FUNCTION_INFO_V1(gbt_uuid_sortsupport); static int @@ -230,3 +232,24 @@ gbt_uuid_same(PG_FUNCTION_ARGS) *result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo); PG_RETURN_POINTER(result); } + +static int +gbt_uuid_ssup_cmp(Datum x, Datum y, SortSupport ssup) +{ + uuidKEY *arg1 = (uuidKEY *) DatumGetPointer(x); + uuidKEY *arg2 = (uuidKEY *) DatumGetPointer(y); + + /* for leaf items we expect lower == upper, so only compare lower */ + return uuid_internal_cmp(&arg1->lower, &arg2->lower); +} + +Datum +gbt_uuid_sortsupport(PG_FUNCTION_ARGS) +{ + SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0); + + ssup->comparator = gbt_uuid_ssup_cmp; + ssup->ssup_extra = NULL; + + PG_RETURN_VOID(); +} |