diff options
Diffstat (limited to 'src/include/nodes/primnodes.h')
| -rw-r--r-- | src/include/nodes/primnodes.h | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/src/include/nodes/primnodes.h b/src/include/nodes/primnodes.h index 5f5d4125c65..0320e231553 100644 --- a/src/include/nodes/primnodes.h +++ b/src/include/nodes/primnodes.h @@ -10,7 +10,7 @@ * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/nodes/primnodes.h,v 1.150 2009/07/16 06:33:45 petere Exp $ + * $PostgreSQL: pgsql/src/include/nodes/primnodes.h,v 1.151 2009/10/08 02:39:24 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -314,6 +314,29 @@ typedef struct FuncExpr } FuncExpr; /* + * NamedArgExpr - a named argument of a function + * + * This node type can only appear in the args list of a FuncCall or FuncExpr + * node. We support pure positional call notation (no named arguments), + * named notation (all arguments are named), and mixed notation (unnamed + * arguments followed by named ones). + * + * Parse analysis sets argnumber to the positional index of the argument, + * but doesn't rearrange the argument list. + * + * The planner will convert argument lists to pure positional notation + * during expression preprocessing, so execution never sees a NamedArgExpr. + */ +typedef struct NamedArgExpr +{ + Expr xpr; + Expr *arg; /* the argument expression */ + char *name; /* the name */ + int argnumber; /* argument's number in positional notation */ + int location; /* argument name location, or -1 if unknown */ +} NamedArgExpr; + +/* * OpExpr - expression node for an operator invocation * * Semantically, this is essentially the same as a function call. |