diff options
Diffstat (limited to 'contrib/btree_gist/btree_date.c')
| -rw-r--r-- | contrib/btree_gist/btree_date.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/contrib/btree_gist/btree_date.c b/contrib/btree_gist/btree_date.c index e87f8c03fc7..c008dc61ba5 100644 --- a/contrib/btree_gist/btree_date.c +++ b/contrib/btree_gist/btree_date.c @@ -7,6 +7,7 @@ #include "btree_utils_num.h" #include "utils/fmgrprotos.h" #include "utils/date.h" +#include "utils/sortsupport.h" typedef struct { @@ -23,6 +24,7 @@ PG_FUNCTION_INFO_V1(gbt_date_consistent); PG_FUNCTION_INFO_V1(gbt_date_distance); PG_FUNCTION_INFO_V1(gbt_date_penalty); PG_FUNCTION_INFO_V1(gbt_date_same); +PG_FUNCTION_INFO_V1(gbt_date_sortsupport); static bool gbt_dategt(const void *a, const void *b, FmgrInfo *flinfo) @@ -249,3 +251,26 @@ gbt_date_same(PG_FUNCTION_ARGS) *result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo); PG_RETURN_POINTER(result); } + +static int +gbt_date_ssup_cmp(Datum x, Datum y, SortSupport ssup) +{ + dateKEY *akey = (dateKEY *) DatumGetPointer(x); + dateKEY *bkey = (dateKEY *) DatumGetPointer(y); + + /* for leaf items we expect lower == upper, so only compare lower */ + return DatumGetInt32(DirectFunctionCall2(date_cmp, + DateADTGetDatum(akey->lower), + DateADTGetDatum(bkey->lower))); +} + +Datum +gbt_date_sortsupport(PG_FUNCTION_ARGS) +{ + SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0); + + ssup->comparator = gbt_date_ssup_cmp; + ssup->ssup_extra = NULL; + + PG_RETURN_VOID(); +} |