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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2005-06-26 22:05:42 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2005-06-26 22:05:42 +0000 |
| commit | 943b396245bd699a66c894c5e11303b3ef93ac7b (patch) | |
| tree | a08720e308259beb253e4b4b21f2f08e391a4d9f /src/backend/nodes/readfuncs.c | |
| parent | d395aecffad7cc6bd043e2d81a1bed5b3fe2f5fa (diff) | |
| download | postgresql-943b396245bd699a66c894c5e11303b3ef93ac7b.tar.gz | |
Add Oracle-compatible GREATEST and LEAST functions. Pavel Stehule
Diffstat (limited to 'src/backend/nodes/readfuncs.c')
| -rw-r--r-- | src/backend/nodes/readfuncs.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/src/backend/nodes/readfuncs.c b/src/backend/nodes/readfuncs.c index e01646a71d..9b27dc478e 100644 --- a/src/backend/nodes/readfuncs.c +++ b/src/backend/nodes/readfuncs.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/nodes/readfuncs.c,v 1.178 2005/06/05 22:32:54 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/nodes/readfuncs.c,v 1.179 2005/06/26 22:05:37 tgl Exp $ * * NOTES * Path and Plan nodes do not have any readfuncs support, because we @@ -659,6 +659,21 @@ _readCoalesceExpr(void) } /* + * _readMinMaxExpr + */ +static MinMaxExpr * +_readMinMaxExpr(void) +{ + READ_LOCALS(MinMaxExpr); + + READ_OID_FIELD(minmaxtype); + READ_ENUM_FIELD(op, MinMaxOp); + READ_NODE_FIELD(args); + + READ_DONE(); +} + +/* * _readNullIfExpr */ static NullIfExpr * @@ -982,6 +997,8 @@ parseNodeString(void) return_value = _readRowExpr(); else if (MATCH("COALESCE", 8)) return_value = _readCoalesceExpr(); + else if (MATCH("MINMAX", 6)) + return_value = _readMinMaxExpr(); else if (MATCH("NULLIFEXPR", 10)) return_value = _readNullIfExpr(); else if (MATCH("NULLTEST", 8)) |