diff options
Diffstat (limited to 'src/backend/nodes/makefuncs.c')
| -rw-r--r-- | src/backend/nodes/makefuncs.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/src/backend/nodes/makefuncs.c b/src/backend/nodes/makefuncs.c index 45e1c03738c..95bf730963f 100644 --- a/src/backend/nodes/makefuncs.c +++ b/src/backend/nodes/makefuncs.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/nodes/makefuncs.c,v 1.22 2000/08/08 15:41:24 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/nodes/makefuncs.c,v 1.23 2000/11/16 22:30:23 tgl Exp $ * * NOTES * Creator functions in POSTGRES 4.2 are generated automatically. Most of @@ -20,7 +20,10 @@ * Andrew Yu Oct 20, 1994 file creation */ #include "postgres.h" + #include "nodes/makefuncs.h" +#include "utils/lsyscache.h" + /* * makeOper - @@ -144,6 +147,26 @@ makeConst(Oid consttype, } /* + * makeNullConst - + * creates a Const node representing a NULL of the specified type + */ +Const * +makeNullConst(Oid consttype) +{ + int16 typLen; + bool typByVal; + + get_typlenbyval(consttype, &typLen, &typByVal); + return makeConst(consttype, + (int) typLen, + (Datum) 0, + true, + typByVal, + false, + false); +} + +/* * makeAttr - * creates an Attr node */ |