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First phase of SCHEMA changes, concentrating on fixing the grammar and

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the parsetree representation.  As yet we don't *do* anything with schema
names, just drop 'em on the floor; but you can enter schema-compatible
command syntax, and there's even a primitive CREATE SCHEMA command.
No doc updates yet, except to note that you can now extract a field
from a function-returning-row's result with (foo(...)).fieldname.
This commit is contained in:
Tom Lane
2002-03-21 16:02:16 +00:00
parent 8c9c8ca2b5
commit 95ef6a3448
52 changed files with 2039 additions and 1535 deletions
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10
src/backend/nodes/nodeFuncs.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/nodeFuncs.c,v 1.16 2001/10/28 06:25:44 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/nodeFuncs.c,v 1.17 2002/03/21 16:00:40 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -29,7 +29,9 @@ static bool var_is_inner(Var *var);
bool
single_node(Node *node)
{
if (IsA(node, Ident) ||IsA(node, Const) ||IsA(node, Var) ||IsA(node, Param))
if (IsA(node, Const) ||
IsA(node, Var) ||
IsA(node, Param))
return true;
else
return false;
@ -103,13 +105,13 @@ replace_opid(Oper *oper)
* non_null -
* Returns t if the node is a non-null constant, e.g., if the node has a
* valid `constvalue' field.
*
*/
bool
non_null(Expr *c)
{
if (IsA(c, Const) &&!((Const *) c)->constisnull)
if (IsA(c, Const) &&
!((Const *) c)->constisnull)
return true;
else
return false;