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Change LIMIT/OFFSET to use int8

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Dhanaraj M
This commit is contained in:
Bruce Momjian
2006-07-26 00:34:48 +00:00
parent 796de9c1ed
commit 085e559654
8 changed files with 89 additions and 27 deletions
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42
src/backend/parser/parse_coerce.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/parse_coerce.c,v 2.141 2006/07/14 14:52:22 momjian Exp $
* $PostgreSQL: pgsql/src/backend/parser/parse_coerce.c,v 2.142 2006/07/26 00:34:48 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -821,7 +821,7 @@ coerce_to_boolean(ParseState *pstate, Node *node,
/* coerce_to_integer()
* Coerce an argument of a construct that requires integer input
* (LIMIT, OFFSET, etc). Also check that input is not a set.
* Also check that input is not a set.
*
* Returns the possibly-transformed node tree.
*
@ -857,7 +857,45 @@ coerce_to_integer(ParseState *pstate, Node *node,
return node;
}
/* coerce_to_integer64()
* Coerce an argument of a construct that requires integer input
* (LIMIT, OFFSET). Also check that input is not a set.
*
* Returns the possibly-transformed node tree.
*
* As with coerce_type, pstate may be NULL if no special unknown-Param
* processing is wanted.
*/
Node *
coerce_to_integer64(ParseState *pstate, Node *node,
const char *constructName)
{
Oid inputTypeId = exprType(node);
if (inputTypeId != INT8OID)
{
node = coerce_to_target_type(pstate, node, inputTypeId,
INT8OID, -1, COERCION_ASSIGNMENT,
COERCE_IMPLICIT_CAST);
if (node == NULL)
ereport(ERROR,
(errcode(ERRCODE_DATATYPE_MISMATCH),
/* translator: first %s is name of a SQL construct, eg LIMIT */
errmsg("argument of %s must be type integer, not type %s",
constructName, format_type_be(inputTypeId))));
}
if (expression_returns_set(node))
ereport(ERROR,
(errcode(ERRCODE_DATATYPE_MISMATCH),
/* translator: %s is name of a SQL construct, eg LIMIT */
errmsg("argument of %s must not return a set",
constructName)));
return node;
}
/* select_common_type()
* Determine the common supertype of a list of input expression types.