*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/executor/nodeLimit.c,v 1.25 2006/03/05 15:58:26 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/executor/nodeLimit.c,v 1.26 2006/07/26 00:34:48 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#include "executor/executor.h"
#include "executor/nodeLimit.h"
+#include "catalog/pg_type.h"
static void recompute_limits(LimitState *node);
{
ExprContext *econtext = node->ps.ps_ExprContext;
bool isNull;
-
+ Oid type;
+
if (node->limitOffset)
{
- node->offset =
- DatumGetInt32(ExecEvalExprSwitchContext(node->limitOffset,
+ type = ((Const *) node->limitOffset->expr)->consttype;
+
+ if (type == INT8OID)
+ node->offset =
+ DatumGetInt64(ExecEvalExprSwitchContext(node->limitOffset,
econtext,
&isNull,
NULL));
+ else
+ node->offset = DatumGetInt32(ExecEvalExprSwitchContext(node->limitOffset,
+ econtext,
+ &isNull,
+ NULL));
+
/* Interpret NULL offset as no offset */
if (isNull)
node->offset = 0;
if (node->limitCount)
{
node->noCount = false;
- node->count =
- DatumGetInt32(ExecEvalExprSwitchContext(node->limitCount,
+ type = ((Const *) node->limitCount->expr)->consttype;
+
+ if (type == INT8OID)
+ node->count =
+ DatumGetInt64(ExecEvalExprSwitchContext(node->limitCount,
econtext,
&isNull,
NULL));
+ else
+ node->count = DatumGetInt32(ExecEvalExprSwitchContext(node->limitCount,
+ econtext,
+ &isNull,
+ NULL));
+
+
/* Interpret NULL count as no count (LIMIT ALL) */
if (isNull)
node->noCount = true;
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/plan/createplan.c,v 1.214 2006/07/14 14:52:20 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/plan/createplan.c,v 1.215 2006/07/26 00:34:48 momjian Exp $
*
*-------------------------------------------------------------------------
*/
*/
Limit *
make_limit(Plan *lefttree, Node *limitOffset, Node *limitCount,
- int offset_est, int count_est)
+ int64 offset_est, int64 count_est)
{
Limit *node = makeNode(Limit);
Plan *plan = &node->plan;
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/plan/planner.c,v 1.203 2006/07/14 14:52:20 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/plan/planner.c,v 1.204 2006/07/26 00:34:48 momjian Exp $
*
*-------------------------------------------------------------------------
*/
static Plan *grouping_planner(PlannerInfo *root, double tuple_fraction);
static double preprocess_limit(PlannerInfo *root,
double tuple_fraction,
- int *offset_est, int *count_est);
+ int64 *offset_est, int64 *count_est);
static bool choose_hashed_grouping(PlannerInfo *root, double tuple_fraction,
Path *cheapest_path, Path *sorted_path,
double dNumGroups, AggClauseCounts *agg_counts);
{
Query *parse = root->parse;
List *tlist = parse->targetList;
- int offset_est = 0;
- int count_est = 0;
+ int64 offset_est = 0;
+ int64 count_est = 0;
Plan *result_plan;
List *current_pathkeys;
List *sort_pathkeys;
*/
static double
preprocess_limit(PlannerInfo *root, double tuple_fraction,
- int *offset_est, int *count_est)
+ int64 *offset_est, int64 *count_est)
{
Query *parse = root->parse;
Node *est;
}
else
{
- *count_est = DatumGetInt32(((Const *) est)->constvalue);
+ *count_est = DatumGetInt64(((Const *) est)->constvalue);
if (*count_est <= 0)
*count_est = 1; /* force to at least 1 */
}
}
else
{
- *offset_est = DatumGetInt32(((Const *) est)->constvalue);
+ *offset_est = DatumGetInt64(((Const *) est)->constvalue);
+
if (*offset_est < 0)
*offset_est = 0; /* less than 0 is same as 0 */
}
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/parser/parse_clause.c,v 1.153 2006/07/14 14:52:21 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/parser/parse_clause.c,v 1.154 2006/07/26 00:34:48 momjian Exp $
*
*-------------------------------------------------------------------------
*/
qual = transformExpr(pstate, clause);
- qual = coerce_to_integer(pstate, qual, constructName);
+ qual = coerce_to_integer64(pstate, qual, constructName);
/*
* LIMIT can't refer to any vars or aggregates of the current query; we
*
*
* 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 $
*
*-------------------------------------------------------------------------
*/
/* 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.
*
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.
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/nodes/execnodes.h,v 1.153 2006/07/13 16:49:19 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/nodes/execnodes.h,v 1.154 2006/07/26 00:34:48 momjian Exp $
*
*-------------------------------------------------------------------------
*/
PlanState ps; /* its first field is NodeTag */
ExprState *limitOffset; /* OFFSET parameter, or NULL if none */
ExprState *limitCount; /* COUNT parameter, or NULL if none */
- long offset; /* current OFFSET value */
- long count; /* current COUNT, if any */
+ int64 offset; /* current OFFSET value */
+ int64 count; /* current COUNT, if any */
bool noCount; /* if true, ignore count */
LimitStateCond lstate; /* state machine status, as above */
- long position; /* 1-based index of last tuple returned */
+ int64 position; /* 1-based index of last tuple returned */
TupleTableSlot *subSlot; /* tuple last obtained from subplan */
} LimitState;
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/optimizer/planmain.h,v 1.93 2006/07/01 18:38:33 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/optimizer/planmain.h,v 1.94 2006/07/26 00:34:48 momjian Exp $
*
*-------------------------------------------------------------------------
*/
extern Plan *materialize_finished_plan(Plan *subplan);
extern Unique *make_unique(Plan *lefttree, List *distinctList);
extern Limit *make_limit(Plan *lefttree, Node *limitOffset, Node *limitCount,
- int offset_est, int count_est);
+ int64 offset_est, int64 count_est);
extern SetOp *make_setop(SetOpCmd cmd, Plan *lefttree,
List *distinctList, AttrNumber flagColIdx);
extern Result *make_result(List *tlist, Node *resconstantqual, Plan *subplan);
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/parser/parse_coerce.h,v 1.63 2006/07/13 16:49:19 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/parser/parse_coerce.h,v 1.64 2006/07/26 00:34:48 momjian Exp $
*
*-------------------------------------------------------------------------
*/
const char *constructName);
extern Node *coerce_to_integer(ParseState *pstate, Node *node,
const char *constructName);
-
+extern Node *coerce_to_integer64(ParseState *pstate, Node *node,
+ const char *constructName);
+
extern Oid select_common_type(List *typeids, const char *context);
extern Node *coerce_to_common_type(ParseState *pstate, Node *node,
Oid targetTypeId,
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