diff options
| author | Fujii Masao <fujii@postgresql.org> | 2022-02-10 12:33:41 +0900 |
|---|---|---|
| committer | Fujii Masao <fujii@postgresql.org> | 2022-02-10 12:33:41 +0900 |
| commit | 400fc6b6487ddf16aa82c9d76e5cfbe64d94f660 (patch) | |
| tree | 220507135a4655581f534c1948a2ddef702602ff /src/backend/utils/adt/xid.c | |
| parent | adbd00f7a59bcfbcd6907858499c94a27c6680ed (diff) | |
| download | postgresql-400fc6b6487ddf16aa82c9d76e5cfbe64d94f660.tar.gz postgresql-400fc6b6487ddf16aa82c9d76e5cfbe64d94f660.zip | |
Add min() and max() aggregates for xid8.
Bump catalog version.
Author: Ken Kato
Reviewed-by: Kyotaro Horiguchi, Fujii Masao
Discussion: https://postgr.es/m/47d77b18c44f87f8222c4c7a3e2dee6b@oss.nttdata.com
Diffstat (limited to 'src/backend/utils/adt/xid.c')
| -rw-r--r-- | src/backend/utils/adt/xid.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/backend/utils/adt/xid.c b/src/backend/utils/adt/xid.c index 9b4ceaea47f..e4b4952a281 100644 --- a/src/backend/utils/adt/xid.c +++ b/src/backend/utils/adt/xid.c @@ -286,6 +286,30 @@ xid8cmp(PG_FUNCTION_ARGS) PG_RETURN_INT32(-1); } +Datum +xid8_larger(PG_FUNCTION_ARGS) +{ + FullTransactionId fxid1 = PG_GETARG_FULLTRANSACTIONID(0); + FullTransactionId fxid2 = PG_GETARG_FULLTRANSACTIONID(1); + + if (FullTransactionIdFollows(fxid1, fxid2)) + PG_RETURN_FULLTRANSACTIONID(fxid1); + else + PG_RETURN_FULLTRANSACTIONID(fxid2); +} + +Datum +xid8_smaller(PG_FUNCTION_ARGS) +{ + FullTransactionId fxid1 = PG_GETARG_FULLTRANSACTIONID(0); + FullTransactionId fxid2 = PG_GETARG_FULLTRANSACTIONID(1); + + if (FullTransactionIdPrecedes(fxid1, fxid2)) + PG_RETURN_FULLTRANSACTIONID(fxid1); + else + PG_RETURN_FULLTRANSACTIONID(fxid2); +} + /***************************************************************************** * COMMAND IDENTIFIER ROUTINES * *****************************************************************************/ |