diff options
Diffstat (limited to 'src/backend/utils/adt/date.c')
| -rw-r--r-- | src/backend/utils/adt/date.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/src/backend/utils/adt/date.c b/src/backend/utils/adt/date.c index 3810e4a9785..cf5a1c6039e 100644 --- a/src/backend/utils/adt/date.c +++ b/src/backend/utils/adt/date.c @@ -24,6 +24,7 @@ #include "access/xact.h" #include "libpq/pqformat.h" #include "miscadmin.h" +#include "nodes/supportnodes.h" #include "parser/scansup.h" #include "utils/array.h" #include "utils/builtins.h" @@ -1341,15 +1342,25 @@ make_time(PG_FUNCTION_ARGS) } -/* time_transform() - * Flatten calls to time_scale() and timetz_scale() that solely represent - * increases in allowed precision. +/* time_support() + * + * Planner support function for the time_scale() and timetz_scale() + * length coercion functions (we need not distinguish them here). */ Datum -time_transform(PG_FUNCTION_ARGS) +time_support(PG_FUNCTION_ARGS) { - PG_RETURN_POINTER(TemporalTransform(MAX_TIME_PRECISION, - (Node *) PG_GETARG_POINTER(0))); + Node *rawreq = (Node *) PG_GETARG_POINTER(0); + Node *ret = NULL; + + if (IsA(rawreq, SupportRequestSimplify)) + { + SupportRequestSimplify *req = (SupportRequestSimplify *) rawreq; + + ret = TemporalSimplify(MAX_TIME_PRECISION, (Node *) req->fcall); + } + + PG_RETURN_POINTER(ret); } /* time_scale() |