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Add capabilities for automatic type conversion.

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This commit is contained in:
Thomas G. Lockhart
1998-05-09 23:31:34 +00:00
parent 54b5577cb6
commit 3ace5fd082
10 changed files with 2051 additions and 395 deletions
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18
src/backend/parser/parse_expr.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.27 1998/04/26 04:06:45 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.28 1998/05/09 23:29:53 thomas Exp $
*
*-------------------------------------------------------------------------
*/
@ -301,12 +301,14 @@ transformExpr(ParseState *pstate, Node *expr, int precedence)
result = (Node *) expr;
break;
}
/* These nodes do _not_ come from the original parse tree.
* They result from parser transformation in this phase.
/* These nodes do _not_ come from the original parse tree,
* but result from parser transformation in this phase.
* At least one construct (BETWEEN/AND) puts the same nodes
* into two branches of the parse tree. Hence, some nodes
* are transformed twice. These nodes come from transforming
* a function call. Let's try just passing them through...
* into two branches of the parse tree; hence, some nodes
* are transformed twice.
* These cases below come from transforming function calls.
* Let's try just passing them through...
* - thomas 1998-03-14
*/
case T_Expr:
@ -506,6 +508,10 @@ parser_typecast(Value *expr, TypeName *typename, int16 atttypmod)
return (Node *) adt;
}
/* parser_typecast2()
* Convert (only) constants to specified type.
*/
Node *
parser_typecast2(Node *expr, Oid exprType, Type tp, int16 atttypmod)
{