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| author | Tatsuo Ishii <ishii@postgresql.org> | 2001-11-18 12:07:07 +0000 |
|---|---|---|
| committer | Tatsuo Ishii <ishii@postgresql.org> | 2001-11-18 12:07:07 +0000 |
| commit | 226211f0af3b9deee6733a5393f32cb34c59bc53 (patch) | |
| tree | 200d90ea15b5a7c1de85f1cea774ca0e58d6f3ae /src/backend/utils/adt/varchar.c | |
| parent | e2548526cf21896c775aa35da8cc2ef24acda597 (diff) | |
Optimization for bpcharlen, textlen, varcharlen in case of single byte
encodings.
Diffstat (limited to 'src/backend/utils/adt/varchar.c')
| -rw-r--r-- | src/backend/utils/adt/varchar.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/backend/utils/adt/varchar.c b/src/backend/utils/adt/varchar.c index b7230b5bbd9..f25a06e1449 100644 --- a/src/backend/utils/adt/varchar.c +++ b/src/backend/utils/adt/varchar.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/utils/adt/varchar.c,v 1.86 2001/11/08 04:05:13 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/utils/adt/varchar.c,v 1.87 2001/11/18 12:07:07 ishii Exp $ * *------------------------------------------------------------------------- */ @@ -598,6 +598,10 @@ bpcharlen(PG_FUNCTION_ARGS) BpChar *arg = PG_GETARG_BPCHAR_P(0); #ifdef MULTIBYTE + /* optimization for single byte encoding */ + if (pg_database_encoding_max_length() <= 1) + PG_RETURN_INT32(VARSIZE(arg) - VARHDRSZ); + PG_RETURN_INT32( pg_mbstrlen_with_len(VARDATA(arg), VARSIZE(arg) - VARHDRSZ) ); @@ -806,6 +810,10 @@ varcharlen(PG_FUNCTION_ARGS) VarChar *arg = PG_GETARG_VARCHAR_P(0); #ifdef MULTIBYTE + /* optimization for single byte encoding */ + if (pg_database_encoding_max_length() <= 1) + PG_RETURN_INT32(VARSIZE(arg) - VARHDRSZ); + PG_RETURN_INT32( pg_mbstrlen_with_len(VARDATA(arg), VARSIZE(arg) - VARHDRSZ) ); |