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| author | Bruce Momjian <bruce@momjian.us> | 2001-05-19 00:33:20 +0000 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2001-05-19 00:33:20 +0000 |
| commit | 5ec847432362d905e71fedd1182cdd3bb10b3120 (patch) | |
| tree | 2f6a473e8f29cea67861212540102516594678e1 /src/backend/parser/parse_expr.c | |
| parent | f61d70c2ac83b62b6d3458d3e46a71b9f1671e54 (diff) | |
| download | postgresql-5ec847432362d905e71fedd1182cdd3bb10b3120.tar.gz postgresql-5ec847432362d905e71fedd1182cdd3bb10b3120.zip | |
New comment. This func/column things has always confused me.
/*
* parse function
* This code is confusing because the database can accept
* relation.column, column.function, or relation.column.function.
* In these cases, funcname is the last parameter, and fargs are
* the rest.
*
* It can also be called as func(col) or func(col,col).
* In this case, Funcname is the part before parens, and fargs
* are the part in parens.
*
*/
Node *
ParseFuncOrColumn(ParseState *pstate, char *funcname, List *fargs,
bool agg_star, bool agg_distinct,
int precedence)
Diffstat (limited to 'src/backend/parser/parse_expr.c')
| -rw-r--r-- | src/backend/parser/parse_expr.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/backend/parser/parse_expr.c b/src/backend/parser/parse_expr.c index 786be985200..08a2f5f2035 100644 --- a/src/backend/parser/parse_expr.c +++ b/src/backend/parser/parse_expr.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.94 2001/05/18 22:35:50 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.95 2001/05/19 00:33:20 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -173,7 +173,7 @@ transformExpr(ParseState *pstate, Node *expr, int precedence) a->lexpr, precedence); - result = ParseColumnOrFunc(pstate, + result = ParseFuncOrColumn(pstate, "nullvalue", makeList1(lexpr), false, false, @@ -186,7 +186,7 @@ transformExpr(ParseState *pstate, Node *expr, int precedence) a->lexpr, precedence); - result = ParseColumnOrFunc(pstate, + result = ParseFuncOrColumn(pstate, "nonnullvalue", makeList1(lexpr), false, false, @@ -273,7 +273,7 @@ transformExpr(ParseState *pstate, Node *expr, int precedence) lfirst(args) = transformExpr(pstate, (Node *) lfirst(args), precedence); - result = ParseColumnOrFunc(pstate, + result = ParseFuncOrColumn(pstate, fn->funcname, fn->args, fn->agg_star, |