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mirror of https://github.com/postgres/postgres.git synced 2025-07-07 00:36:50 +03:00

Create a new parsetree node type, TypeCast, so that transformation of

SQL cast constructs can be performed during expression transformation
instead of during parsing.  This allows constructs like x::numeric(9,2)
and x::int2::float8 to behave as one would expect.
This commit is contained in:
Tom Lane
2000-01-17 00:14:49 +00:00
parent e0bd60171a
commit 49528361f5
10 changed files with 242 additions and 132 deletions

View File

@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.99 2000/01/09 00:26:22 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.100 2000/01/17 00:14:46 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -1385,6 +1385,17 @@ _copyTypeName(TypeName *from)
return newnode;
}
static TypeCast *
_copyTypeCast(TypeCast *from)
{
TypeCast *newnode = makeNode(TypeCast);
Node_Copy(from, newnode, arg);
Node_Copy(from, newnode, typename);
return newnode;
}
static Query *
_copyQuery(Query *from)
{
@ -1658,6 +1669,9 @@ copyObject(void *from)
case T_TypeName:
retval = _copyTypeName(from);
break;
case T_TypeCast:
retval = _copyTypeCast(from);
break;
/*
* VALUE NODES