diff options
Diffstat (limited to 'src/backend/utils/adt/varlena.c')
| -rw-r--r-- | src/backend/utils/adt/varlena.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/backend/utils/adt/varlena.c b/src/backend/utils/adt/varlena.c index 4346410d5a9..e8500b274dc 100644 --- a/src/backend/utils/adt/varlena.c +++ b/src/backend/utils/adt/varlena.c @@ -1762,6 +1762,34 @@ text_ge(PG_FUNCTION_ARGS) } Datum +text_starts_with(PG_FUNCTION_ARGS) +{ + Datum arg1 = PG_GETARG_DATUM(0); + Datum arg2 = PG_GETARG_DATUM(1); + bool result; + Size len1, + len2; + + len1 = toast_raw_datum_size(arg1); + len2 = toast_raw_datum_size(arg2); + if (len2 > len1) + result = false; + else + { + text *targ1 = DatumGetTextPP(arg1); + text *targ2 = DatumGetTextPP(arg2); + + result = (memcmp(VARDATA_ANY(targ1), VARDATA_ANY(targ2), + VARSIZE_ANY_EXHDR(targ2)) == 0); + + PG_FREE_IF_COPY(targ1, 0); + PG_FREE_IF_COPY(targ2, 1); + } + + PG_RETURN_BOOL(result); +} + +Datum bttextcmp(PG_FUNCTION_ARGS) { text *arg1 = PG_GETARG_TEXT_PP(0); |