#include "access/stratnum.h"
#include "access/sysattr.h"
#include "catalog/pg_am.h"
+#include "catalog/pg_amop.h"
#include "catalog/pg_operator.h"
#include "catalog/pg_opfamily.h"
#include "catalog/pg_type.h"
#include "optimizer/paths.h"
#include "optimizer/prep.h"
#include "optimizer/restrictinfo.h"
+#include "utils/array.h"
#include "utils/lsyscache.h"
#include "utils/selfuncs.h"
+#include "utils/syscache.h"
/* XXX see PartCollMatchesExprColl */
RestrictInfo *rinfo,
int indexcol,
IndexOptInfo *index);
+static IndexClause *match_orclause_to_indexcol(PlannerInfo *root,
+ RestrictInfo *rinfo,
+ int indexcol,
+ IndexOptInfo *index);
static IndexClause *expand_indexqual_rowcompare(PlannerInfo *root,
RestrictInfo *rinfo,
int indexcol,
* (3) must match the collation of the index, if collation is relevant.
*
* Our definition of "const" is exceedingly liberal: we allow anything that
- * doesn't involve a volatile function or a Var of the index's relation.
+ * doesn't involve a volatile function or a Var of the index's relation
+ * except for a boolean OR expression input: due to a trade-off between the
+ * expected execution speedup and planning complexity, we limit or->saop
+ * transformation by obvious cases when an index scan can get a profit.
* In particular, Vars belonging to other relations of the query are
* accepted here, since a clause of that form can be used in a
* parameterized indexscan. It's the responsibility of higher code levels
* It is also possible to match ScalarArrayOpExpr clauses to indexes, when
* the clause is of the form "indexkey op ANY (arrayconst)".
*
+ * It is also possible to match a list of OR clauses if it might be
+ * transformed into a single ScalarArrayOpExpr clause. On success,
+ * the returning index clause will contain a trasformed clause.
+ *
* For boolean indexes, it is also possible to match the clause directly
* to the indexkey; or perhaps the clause is (NOT indexkey).
*
}
/*
- * Clause must be an opclause, funcclause, ScalarArrayOpExpr, or
- * RowCompareExpr. Or, if the index supports it, we can handle IS
- * NULL/NOT NULL clauses.
+ * Clause must be an opclause, funcclause, ScalarArrayOpExpr,
+ * RowCompareExpr, or OR-clause that could be converted to SAOP. Or, if
+ * the index supports it, we can handle IS NULL/NOT NULL clauses.
*/
if (IsA(clause, OpExpr))
{
{
return match_rowcompare_to_indexcol(root, rinfo, indexcol, index);
}
+ else if (restriction_is_or_clause(rinfo))
+ {
+ return match_orclause_to_indexcol(root, rinfo, indexcol, index);
+ }
else if (index->amsearchnulls && IsA(clause, NullTest))
{
NullTest *nt = (NullTest *) clause;
return NULL;
}
+/*
+ * match_orclause_to_indexcol()
+ * Handles the OR-expr case for match_clause_to_indexcol() in the case
+ * when it could be transformed to ScalarArrayOpExpr.
+ *
+ * In this routine, we attempt to transform a list of OR-clause args into a
+ * single SAOP expression matching the target index column. On success,
+ * return an IndexClause, containing the transformed expression or NULL,
+ * if failed.
+ */
+static IndexClause *
+match_orclause_to_indexcol(PlannerInfo *root,
+ RestrictInfo *rinfo,
+ int indexcol,
+ IndexOptInfo *index)
+{
+ ListCell *lc;
+ BoolExpr *orclause = (BoolExpr *) rinfo->orclause;
+ Node *indexExpr = NULL;
+ List *consts = NIL;
+ Node *arrayNode = NULL;
+ ScalarArrayOpExpr *saopexpr = NULL;
+ Oid matchOpno = InvalidOid;
+ IndexClause *iclause;
+ Oid consttype = InvalidOid;
+ Oid arraytype = InvalidOid;
+ Oid inputcollid = InvalidOid;
+ bool firstTime = true;
+ bool haveParam = false;
+
+ Assert(IsA(orclause, BoolExpr));
+ Assert(orclause->boolop == OR_EXPR);
+
+ /*
+ * Try to convert a list of OR-clauses to a single SAOP expression. Each
+ * OR entry must be in the form: (indexkey operator constant) or (constant
+ * operator indexkey). Operators of all the entries must match. Constant
+ * might be either Const or Param. To be effective, give up on the first
+ * non-matching entry. Exit is implemented as a break from the loop,
+ * which is catched afterwards.
+ */
+ foreach(lc, orclause->args)
+ {
+ RestrictInfo *subRinfo;
+ OpExpr *subClause;
+ Oid opno;
+ Node *leftop,
+ *rightop;
+ Node *constExpr;
+
+ if (!IsA(lfirst(lc), RestrictInfo))
+ break;
+
+ subRinfo = (RestrictInfo *) lfirst(lc);
+
+ /* Only operator clauses can match */
+ if (!IsA(subRinfo->clause, OpExpr))
+ break;
+
+ subClause = (OpExpr *) subRinfo->clause;
+ opno = subClause->opno;
+
+ /* Only binary operators can match */
+ if (list_length(subClause->args) != 2)
+ break;
+
+ /*
+ * The parameters below must match between sub-rinfo and its parent as
+ * make_restrictinfo() fills them with the same values, and further
+ * modifications are also the same for the whole subtree. However,
+ * still make a sanity check.
+ */
+ Assert(subRinfo->is_pushed_down == rinfo->is_pushed_down);
+ Assert(subRinfo->is_clone == rinfo->is_clone);
+ Assert(subRinfo->security_level == rinfo->security_level);
+ Assert(bms_equal(subRinfo->incompatible_relids, rinfo->incompatible_relids));
+ Assert(bms_equal(subRinfo->outer_relids, rinfo->outer_relids));
+
+ /*
+ * Also, check that required_relids in sub-rinfo is subset of parent's
+ * required_relids.
+ */
+ Assert(bms_is_subset(subRinfo->required_relids, rinfo->required_relids));
+
+ /* Only the operator returning a boolean suit the transformation. */
+ if (get_op_rettype(opno) != BOOLOID)
+ break;
+
+ /*
+ * Check for clauses of the form: (indexkey operator constant) or
+ * (constant operator indexkey). Determine indexkey side first, check
+ * the constant later.
+ */
+ leftop = (Node *) linitial(subClause->args);
+ rightop = (Node *) lsecond(subClause->args);
+ if (match_index_to_operand(leftop, indexcol, index))
+ {
+ indexExpr = leftop;
+ constExpr = rightop;
+ }
+ else if (match_index_to_operand(rightop, indexcol, index))
+ {
+ opno = get_commutator(opno);
+ if (!OidIsValid(opno))
+ {
+ /* commutator doesn't exist, we can't reverse the order */
+ break;
+ }
+ indexExpr = rightop;
+ constExpr = leftop;
+ }
+ else
+ {
+ break;
+ }
+
+ /*
+ * Ignore any RelabelType node above the operands. This is needed to
+ * be able to apply indexscanning in binary-compatible-operator cases.
+ * Note: we can assume there is at most one RelabelType node;
+ * eval_const_expressions() will have simplified if more than one.
+ */
+ if (IsA(constExpr, RelabelType))
+ constExpr = (Node *) ((RelabelType *) constExpr)->arg;
+ if (IsA(indexExpr, RelabelType))
+ indexExpr = (Node *) ((RelabelType *) indexExpr)->arg;
+
+ /* We allow constant to be Const or Param */
+ if (!IsA(constExpr, Const) && !IsA(constExpr, Param))
+ break;
+
+ /* Forbid transformation for composite types, records. */
+ if (type_is_rowtype(exprType(constExpr)) ||
+ type_is_rowtype(exprType(indexExpr)))
+ break;
+
+ /*
+ * Save information about the operator, type, and collation for the
+ * first matching qual. Then, check that subsequent quals match the
+ * first.
+ */
+ if (firstTime)
+ {
+ matchOpno = opno;
+ consttype = exprType(constExpr);
+ arraytype = get_array_type(consttype);
+ inputcollid = subClause->inputcollid;
+
+ /*
+ * Check that the operator is presented in the opfamily and that
+ * the expression collation matches the index collation. Also,
+ * there must be an array type to construct an array later.
+ */
+ if (!IndexCollMatchesExprColl(index->indexcollations[indexcol], inputcollid) ||
+ !op_in_opfamily(matchOpno, index->opfamily[indexcol]) ||
+ !OidIsValid(arraytype))
+ break;
+ firstTime = false;
+ }
+ else
+ {
+ if (opno != matchOpno ||
+ inputcollid != subClause->inputcollid ||
+ consttype != exprType(constExpr))
+ break;
+ }
+
+ if (IsA(constExpr, Param))
+ haveParam = true;
+ consts = lappend(consts, constExpr);
+ }
+
+ /*
+ * Catch the break from the loop above. Normally, a foreach() loop ends
+ * up with a NULL list cell. A non-NULL list cell indicates a break from
+ * the foreach() loop. Free the consts list and return NULL then.
+ */
+ if (lc != NULL)
+ {
+ list_free(consts);
+ return NULL;
+ }
+
+ /*
+ * Assemble an array from the list of constants. It seems more profitable
+ * to build a const array. But in the presence of parameters, we don't
+ * have a specific value here and must employ an ArrayExpr instead.
+ */
+ if (haveParam)
+ {
+ ArrayExpr *arrayExpr = makeNode(ArrayExpr);
+
+ /* array_collid will be set by parse_collate.c */
+ arrayExpr->element_typeid = consttype;
+ arrayExpr->array_typeid = arraytype;
+ arrayExpr->multidims = false;
+ arrayExpr->elements = consts;
+ arrayExpr->location = -1;
+
+ arrayNode = (Node *) arrayExpr;
+ }
+ else
+ {
+ int16 typlen;
+ bool typbyval;
+ char typalign;
+ Datum *elems;
+ int i = 0;
+ ArrayType *arrayConst;
+
+ get_typlenbyvalalign(consttype, &typlen, &typbyval, &typalign);
+
+ elems = (Datum *) palloc(sizeof(Datum) * list_length(consts));
+ foreach_node(Const, value, consts)
+ {
+ Assert(!value->constisnull && value->constvalue);
+
+ elems[i++] = value->constvalue;
+ }
+
+ arrayConst = construct_array(elems, i, consttype,
+ typlen, typbyval, typalign);
+ arrayNode = (Node *) makeConst(arraytype, -1, inputcollid,
+ -1, PointerGetDatum(arrayConst),
+ false, false);
+
+ pfree(elems);
+ list_free(consts);
+ }
+
+ /* Build the SAOP expression node */
+ saopexpr = makeNode(ScalarArrayOpExpr);
+ saopexpr->opno = matchOpno;
+ saopexpr->opfuncid = get_opcode(matchOpno);
+ saopexpr->hashfuncid = InvalidOid;
+ saopexpr->negfuncid = InvalidOid;
+ saopexpr->useOr = true;
+ saopexpr->inputcollid = inputcollid;
+ saopexpr->args = list_make2(indexExpr, arrayNode);
+ saopexpr->location = -1;
+
+ /*
+ * Finally, build an IndexClause based on the SAOP node. Use
+ * make_simple_restrictinfo() to get RestrictInfo with clean selectivity
+ * estimations, because they may differ from the estimation made for an OR
+ * clause. Although it is not a lossy expression, keep the original rinfo
+ * in iclause->rinfo as prescribed.
+ */
+ iclause = makeNode(IndexClause);
+ iclause->rinfo = rinfo;
+ iclause->indexquals = list_make1(make_simple_restrictinfo(root,
+ &saopexpr->xpr));
+ iclause->lossy = false;
+ iclause->indexcol = indexcol;
+ iclause->indexcols = NIL;
+ return iclause;
+}
+
/*
* expand_indexqual_rowcompare --- expand a single indexqual condition
* that is a RowCompareExpr
EXPLAIN (COSTS OFF)
SELECT * FROM tenk1
WHERE thousand = 42 AND (tenthous = 1 OR tenthous = 3 OR tenthous = 42);
- QUERY PLAN
------------------------------------------------------------------------------------------------------------------------------------------
- Bitmap Heap Scan on tenk1
- Recheck Cond: (((thousand = 42) AND (tenthous = 1)) OR ((thousand = 42) AND (tenthous = 3)) OR ((thousand = 42) AND (tenthous = 42)))
- -> BitmapOr
- -> Bitmap Index Scan on tenk1_thous_tenthous
- Index Cond: ((thousand = 42) AND (tenthous = 1))
- -> Bitmap Index Scan on tenk1_thous_tenthous
- Index Cond: ((thousand = 42) AND (tenthous = 3))
- -> Bitmap Index Scan on tenk1_thous_tenthous
- Index Cond: ((thousand = 42) AND (tenthous = 42))
-(9 rows)
+ QUERY PLAN
+------------------------------------------------------------------------------
+ Index Scan using tenk1_thous_tenthous on tenk1
+ Index Cond: ((thousand = 42) AND (tenthous = ANY ('{1,3,42}'::integer[])))
+(2 rows)
+
+SELECT * FROM tenk1
+ WHERE thousand = 42 AND (tenthous = 1 OR tenthous = 3 OR tenthous = 42);
+ unique1 | unique2 | two | four | ten | twenty | hundred | thousand | twothousand | fivethous | tenthous | odd | even | stringu1 | stringu2 | string4
+---------+---------+-----+------+-----+--------+---------+----------+-------------+-----------+----------+-----+------+----------+----------+---------
+ 42 | 5530 | 0 | 2 | 2 | 2 | 42 | 42 | 42 | 42 | 42 | 84 | 85 | QBAAAA | SEIAAA | OOOOxx
+(1 row)
+
+EXPLAIN (COSTS OFF)
+SELECT * FROM tenk1
+ WHERE thousand = 42 AND (tenthous = 1 OR tenthous = (SELECT 1 + 2) OR tenthous = 42);
+ QUERY PLAN
+----------------------------------------------------------------------------------------
+ Index Scan using tenk1_thous_tenthous on tenk1
+ Index Cond: ((thousand = 42) AND (tenthous = ANY (ARRAY[1, (InitPlan 1).col1, 42])))
+ InitPlan 1
+ -> Result
+(4 rows)
+
+SELECT * FROM tenk1
+ WHERE thousand = 42 AND (tenthous = 1 OR tenthous = (SELECT 1 + 2) OR tenthous = 42);
+ unique1 | unique2 | two | four | ten | twenty | hundred | thousand | twothousand | fivethous | tenthous | odd | even | stringu1 | stringu2 | string4
+---------+---------+-----+------+-----+--------+---------+----------+-------------+-----------+----------+-----+------+----------+----------+---------
+ 42 | 5530 | 0 | 2 | 2 | 2 | 42 | 42 | 42 | 42 | 42 | 84 | 85 | QBAAAA | SEIAAA | OOOOxx
+(1 row)
+
+EXPLAIN (COSTS OFF)
+SELECT count(*) FROM tenk1
+ WHERE hundred = 42 AND (thousand = 42 OR thousand = 99);
+ QUERY PLAN
+---------------------------------------------------------------------------------
+ Aggregate
+ -> Bitmap Heap Scan on tenk1
+ Recheck Cond: ((hundred = 42) AND ((thousand = 42) OR (thousand = 99)))
+ -> BitmapAnd
+ -> Bitmap Index Scan on tenk1_hundred
+ Index Cond: (hundred = 42)
+ -> Bitmap Index Scan on tenk1_thous_tenthous
+ Index Cond: (thousand = ANY ('{42,99}'::integer[]))
+(8 rows)
+
+SELECT count(*) FROM tenk1
+ WHERE hundred = 42 AND (thousand = 42 OR thousand = 99);
+ count
+-------
+ 10
+(1 row)
+
+EXPLAIN (COSTS OFF)
+SELECT * FROM tenk1
+ WHERE thousand = 42 AND (tenthous = 1 OR tenthous = 3 OR tenthous = 42);
+ QUERY PLAN
+------------------------------------------------------------------------------
+ Index Scan using tenk1_thous_tenthous on tenk1
+ Index Cond: ((thousand = 42) AND (tenthous = ANY ('{1,3,42}'::integer[])))
+(2 rows)
SELECT * FROM tenk1
WHERE thousand = 42 AND (tenthous = 1 OR tenthous = 3 OR tenthous = 42);
42 | 5530 | 0 | 2 | 2 | 2 | 42 | 42 | 42 | 42 | 42 | 84 | 85 | QBAAAA | SEIAAA | OOOOxx
(1 row)
+EXPLAIN (COSTS OFF)
+SELECT * FROM tenk1
+ WHERE thousand = 42 AND (tenthous = 1::numeric OR tenthous = 3::int4 OR tenthous = 42::numeric);
+ QUERY PLAN
+-------------------------------------------------------------------------------------------------------------
+ Bitmap Heap Scan on tenk1
+ Recheck Cond: (thousand = 42)
+ Filter: (((tenthous)::numeric = '1'::numeric) OR (tenthous = 3) OR ((tenthous)::numeric = '42'::numeric))
+ -> Bitmap Index Scan on tenk1_thous_tenthous
+ Index Cond: (thousand = 42)
+(5 rows)
+
+EXPLAIN (COSTS OFF)
+SELECT * FROM tenk1
+ WHERE tenthous = 1::numeric OR tenthous = 3::int4 OR tenthous = 42::numeric;
+ QUERY PLAN
+-------------------------------------------------------------------------------------------------------------
+ Seq Scan on tenk1
+ Filter: (((tenthous)::numeric = '1'::numeric) OR (tenthous = 3) OR ((tenthous)::numeric = '42'::numeric))
+(2 rows)
+
EXPLAIN (COSTS OFF)
SELECT count(*) FROM tenk1
WHERE hundred = 42 AND (thousand = 42 OR thousand = 99);
Aggregate
-> Bitmap Heap Scan on tenk1
Recheck Cond: ((hundred = 42) AND ((thousand = 42) OR (thousand = 99)))
+ -> BitmapAnd
+ -> Bitmap Index Scan on tenk1_hundred
+ Index Cond: (hundred = 42)
+ -> Bitmap Index Scan on tenk1_thous_tenthous
+ Index Cond: (thousand = ANY ('{42,99}'::integer[]))
+(8 rows)
+
+SELECT count(*) FROM tenk1
+ WHERE hundred = 42 AND (thousand = 42 OR thousand = 99);
+ count
+-------
+ 10
+(1 row)
+
+EXPLAIN (COSTS OFF)
+SELECT count(*) FROM tenk1
+ WHERE hundred = 42 AND (thousand < 42 OR thousand < 99 OR 43 > thousand OR 42 > thousand);
+ QUERY PLAN
+-----------------------------------------------------------------------------------------------------------------------
+ Aggregate
+ -> Bitmap Heap Scan on tenk1
+ Recheck Cond: ((hundred = 42) AND ((thousand < 42) OR (thousand < 99) OR (43 > thousand) OR (42 > thousand)))
+ -> BitmapAnd
+ -> Bitmap Index Scan on tenk1_hundred
+ Index Cond: (hundred = 42)
+ -> Bitmap Index Scan on tenk1_thous_tenthous
+ Index Cond: (thousand < ANY ('{42,99,43,42}'::integer[]))
+(8 rows)
+
+SELECT count(*) FROM tenk1
+ WHERE hundred = 42 AND (thousand < 42 OR thousand < 99 OR 43 > thousand OR 42 > thousand);
+ count
+-------
+ 10
+(1 row)
+
+EXPLAIN (COSTS OFF)
+SELECT count(*) FROM tenk1
+ WHERE thousand = 42 AND (tenthous = 1 OR tenthous = 3) OR thousand = 41;
+ QUERY PLAN
+-----------------------------------------------------------------------------------------------------
+ Aggregate
+ -> Bitmap Heap Scan on tenk1
+ Recheck Cond: (((thousand = 42) AND ((tenthous = 1) OR (tenthous = 3))) OR (thousand = 41))
+ -> BitmapOr
+ -> Bitmap Index Scan on tenk1_thous_tenthous
+ Index Cond: ((thousand = 42) AND (tenthous = ANY ('{1,3}'::integer[])))
+ -> Bitmap Index Scan on tenk1_thous_tenthous
+ Index Cond: (thousand = 41)
+(8 rows)
+
+SELECT count(*) FROM tenk1
+ WHERE thousand = 42 AND (tenthous = 1 OR tenthous = 3) OR thousand = 41;
+ count
+-------
+ 10
+(1 row)
+
+EXPLAIN (COSTS OFF)
+SELECT count(*) FROM tenk1
+ WHERE hundred = 42 AND (thousand = 42 OR thousand = 99 OR tenthous < 2) OR thousand = 41;
+ QUERY PLAN
+------------------------------------------------------------------------------------------------------------------------
+ Aggregate
+ -> Bitmap Heap Scan on tenk1
+ Recheck Cond: (((hundred = 42) AND ((thousand = 42) OR (thousand = 99) OR (tenthous < 2))) OR (thousand = 41))
+ -> BitmapOr
+ -> BitmapAnd
+ -> Bitmap Index Scan on tenk1_hundred
+ Index Cond: (hundred = 42)
+ -> BitmapOr
+ -> Bitmap Index Scan on tenk1_thous_tenthous
+ Index Cond: (thousand = 42)
+ -> Bitmap Index Scan on tenk1_thous_tenthous
+ Index Cond: (thousand = 99)
+ -> Bitmap Index Scan on tenk1_thous_tenthous
+ Index Cond: (tenthous < 2)
+ -> Bitmap Index Scan on tenk1_thous_tenthous
+ Index Cond: (thousand = 41)
+(16 rows)
+
+SELECT count(*) FROM tenk1
+ WHERE hundred = 42 AND (thousand = 42 OR thousand = 99 OR tenthous < 2) OR thousand = 41;
+ count
+-------
+ 20
+(1 row)
+
+EXPLAIN (COSTS OFF)
+SELECT count(*) FROM tenk1
+ WHERE hundred = 42 AND (thousand = 42 OR thousand = 41 OR thousand = 99 AND tenthous = 2);
+ QUERY PLAN
+-------------------------------------------------------------------------------------------------------------------------
+ Aggregate
+ -> Bitmap Heap Scan on tenk1
+ Recheck Cond: ((hundred = 42) AND ((thousand = 42) OR (thousand = 41) OR ((thousand = 99) AND (tenthous = 2))))
-> BitmapAnd
-> Bitmap Index Scan on tenk1_hundred
Index Cond: (hundred = 42)
-> Bitmap Index Scan on tenk1_thous_tenthous
Index Cond: (thousand = 42)
-> Bitmap Index Scan on tenk1_thous_tenthous
- Index Cond: (thousand = 99)
-(11 rows)
+ Index Cond: (thousand = 41)
+ -> Bitmap Index Scan on tenk1_thous_tenthous
+ Index Cond: ((thousand = 99) AND (tenthous = 2))
+(13 rows)
SELECT count(*) FROM tenk1
- WHERE hundred = 42 AND (thousand = 42 OR thousand = 99);
+ WHERE hundred = 42 AND (thousand = 42 OR thousand = 41 OR thousand = 99 AND tenthous = 2);
count
-------
10
(1 row)
+EXPLAIN (COSTS OFF)
+SELECT count(*) FROM tenk1, tenk2
+ WHERE tenk1.hundred = 42 AND (tenk2.thousand = 42 OR tenk1.thousand = 41 OR tenk2.tenthous = 2) AND
+ tenk2.hundred = tenk1.hundred;
+ QUERY PLAN
+-----------------------------------------------------------------------------------------------
+ Aggregate
+ -> Nested Loop
+ Join Filter: ((tenk2.thousand = 42) OR (tenk1.thousand = 41) OR (tenk2.tenthous = 2))
+ -> Bitmap Heap Scan on tenk1
+ Recheck Cond: (hundred = 42)
+ -> Bitmap Index Scan on tenk1_hundred
+ Index Cond: (hundred = 42)
+ -> Materialize
+ -> Bitmap Heap Scan on tenk2
+ Recheck Cond: (hundred = 42)
+ -> Bitmap Index Scan on tenk2_hundred
+ Index Cond: (hundred = 42)
+(12 rows)
+
+EXPLAIN (COSTS OFF)
+SELECT count(*) FROM tenk1, tenk2
+ WHERE tenk1.hundred = 42 AND (tenk2.thousand = 42 OR tenk2.thousand = 41 OR tenk2.tenthous = 2) AND
+ tenk2.hundred = tenk1.hundred;
+ QUERY PLAN
+------------------------------------------------------------------------------
+ Aggregate
+ -> Nested Loop
+ -> Bitmap Heap Scan on tenk2
+ Recheck Cond: (hundred = 42)
+ Filter: ((thousand = 42) OR (thousand = 41) OR (tenthous = 2))
+ -> Bitmap Index Scan on tenk2_hundred
+ Index Cond: (hundred = 42)
+ -> Index Only Scan using tenk1_hundred on tenk1
+ Index Cond: (hundred = 42)
+(9 rows)
+
+EXPLAIN (COSTS OFF)
+SELECT count(*) FROM tenk1 JOIN tenk2 ON
+ tenk1.hundred = 42 AND (tenk2.thousand = 42 OR tenk2.thousand = 41 OR tenk2.tenthous = 2) AND
+ tenk2.hundred = tenk1.hundred;
+ QUERY PLAN
+------------------------------------------------------------------------------
+ Aggregate
+ -> Nested Loop
+ -> Bitmap Heap Scan on tenk2
+ Recheck Cond: (hundred = 42)
+ Filter: ((thousand = 42) OR (thousand = 41) OR (tenthous = 2))
+ -> Bitmap Index Scan on tenk2_hundred
+ Index Cond: (hundred = 42)
+ -> Index Only Scan using tenk1_hundred on tenk1
+ Index Cond: (hundred = 42)
+(9 rows)
+
+EXPLAIN (COSTS OFF)
+SELECT count(*) FROM tenk1 LEFT JOIN tenk2 ON
+ tenk1.hundred = 42 AND (tenk2.thousand = 42 OR tenk2.thousand = 41 OR tenk2.tenthous = 2) AND
+ tenk2.hundred = tenk1.hundred;
+ QUERY PLAN
+------------------------------------------------------------------------------------
+ Aggregate
+ -> Nested Loop Left Join
+ Join Filter: (tenk1.hundred = 42)
+ -> Index Only Scan using tenk1_hundred on tenk1
+ -> Memoize
+ Cache Key: tenk1.hundred
+ Cache Mode: logical
+ -> Index Scan using tenk2_hundred on tenk2
+ Index Cond: (hundred = tenk1.hundred)
+ Filter: ((thousand = 42) OR (thousand = 41) OR (tenthous = 2))
+(10 rows)
+
--
-- Check behavior with duplicate index column contents
--
Index Cond: (hundred = 4)
-> Materialize
-> Bitmap Heap Scan on tenk1 a
- Recheck Cond: ((unique1 = 1) OR (unique2 = 3) OR (unique2 = 7))
+ Recheck Cond: ((unique1 = 1) OR ((unique2 = 3) OR (unique2 = 7)))
+ Filter: ((unique1 = 1) OR (unique2 = 3) OR (unique2 = 7))
-> BitmapOr
-> Bitmap Index Scan on tenk1_unique1
Index Cond: (unique1 = 1)
-> Bitmap Index Scan on tenk1_unique2
- Index Cond: (unique2 = 3)
+ Index Cond: (unique2 = ANY ('{3,7}'::integer[]))
+(18 rows)
+
+explain (costs off)
+select * from tenk1 a join tenk1 b on
+ (a.unique1 = 1 and b.unique1 = 2) or
+ ((a.unique2 = 3 or a.unique2 = 7) and b.hundred = 4);
+ QUERY PLAN
+----------------------------------------------------------------------------------------------------------------------
+ Nested Loop
+ Join Filter: (((a.unique1 = 1) AND (b.unique1 = 2)) OR (((a.unique2 = 3) OR (a.unique2 = 7)) AND (b.hundred = 4)))
+ -> Bitmap Heap Scan on tenk1 b
+ Recheck Cond: ((unique1 = 2) OR (hundred = 4))
+ -> BitmapOr
+ -> Bitmap Index Scan on tenk1_unique1
+ Index Cond: (unique1 = 2)
+ -> Bitmap Index Scan on tenk1_hundred
+ Index Cond: (hundred = 4)
+ -> Materialize
+ -> Bitmap Heap Scan on tenk1 a
+ Recheck Cond: ((unique1 = 1) OR ((unique2 = 3) OR (unique2 = 7)))
+ Filter: ((unique1 = 1) OR (unique2 = 3) OR (unique2 = 7))
+ -> BitmapOr
+ -> Bitmap Index Scan on tenk1_unique1
+ Index Cond: (unique1 = 1)
-> Bitmap Index Scan on tenk1_unique2
- Index Cond: (unique2 = 7)
-(19 rows)
+ Index Cond: (unique2 = ANY ('{3,7}'::integer[]))
+(18 rows)
+
+explain (costs off)
+select * from tenk1 a join tenk1 b on
+ (a.unique1 < 20 or a.unique1 = 3 or a.unique1 = 1 and b.unique1 = 2) or
+ ((a.unique2 = 3 or a.unique2 = 7) and b.hundred = 4);
+ QUERY PLAN
+-------------------------------------------------------------------------------------------------------------------------------------------------------------
+ Nested Loop
+ Join Filter: ((a.unique1 < 20) OR (a.unique1 = 3) OR ((a.unique1 = 1) AND (b.unique1 = 2)) OR (((a.unique2 = 3) OR (a.unique2 = 7)) AND (b.hundred = 4)))
+ -> Seq Scan on tenk1 b
+ -> Materialize
+ -> Bitmap Heap Scan on tenk1 a
+ Recheck Cond: ((unique1 < 20) OR (unique1 = 3) OR (unique1 = 1) OR ((unique2 = 3) OR (unique2 = 7)))
+ Filter: ((unique1 < 20) OR (unique1 = 3) OR (unique1 = 1) OR (unique2 = 3) OR (unique2 = 7))
+ -> BitmapOr
+ -> Bitmap Index Scan on tenk1_unique1
+ Index Cond: (unique1 < 20)
+ -> Bitmap Index Scan on tenk1_unique1
+ Index Cond: (unique1 = 3)
+ -> Bitmap Index Scan on tenk1_unique1
+ Index Cond: (unique1 = 1)
+ -> Bitmap Index Scan on tenk1_unique2
+ Index Cond: (unique2 = ANY ('{3,7}'::integer[]))
+(16 rows)
--
-- test placement of movable quals in a parameterized join tree
---
(0 rows)
+EXPLAIN (COSTS OFF) SELECT * FROM rls_tbl WHERE a <<< 1000 or a <<< 900;
+ QUERY PLAN
+--------------------------
+ Result
+ One-Time Filter: false
+(2 rows)
+
DROP OPERATOR <<< (int, int);
DROP FUNCTION op_leak(int, int);
RESET SESSION AUTHORIZATION;
restrict = scalarltsel);
SELECT * FROM tststats.priv_test_tbl WHERE a <<< 0 AND b <<< 0; -- Permission denied
ERROR: permission denied for table priv_test_tbl
+SELECT * FROM tststats.priv_test_tbl WHERE a <<< 0 OR b <<< 0;
+ERROR: permission denied for table priv_test_tbl
DELETE FROM tststats.priv_test_tbl WHERE a <<< 0 AND b <<< 0; -- Permission denied
ERROR: permission denied for table priv_test_tbl
-- Grant access via a security barrier view, but hide all data
---+---
(0 rows)
+SELECT * FROM tststats.priv_test_view WHERE a <<< 0 OR b <<< 0; -- Should not leak
+ a | b
+---+---
+(0 rows)
+
DELETE FROM tststats.priv_test_view WHERE a <<< 0 AND b <<< 0; -- Should not leak
-- Grant table access, but hide all data with RLS
RESET SESSION AUTHORIZATION;
---+---
(0 rows)
+SELECT * FROM tststats.priv_test_tbl WHERE a <<< 0 OR b <<< 0;
+ a | b
+---+---
+(0 rows)
+
DELETE FROM tststats.priv_test_tbl WHERE a <<< 0 AND b <<< 0; -- Should not leak
-- privilege checks for pg_stats_ext and pg_stats_ext_exprs
RESET SESSION AUTHORIZATION;
CREATE INDEX guid1_hash ON guid1 USING HASH (guid_field);
-- unique index test
CREATE UNIQUE INDEX guid1_unique_BTREE ON guid1 USING BTREE (guid_field);
+EXPLAIN (COSTS OFF)
+SELECT COUNT(*) FROM guid1 WHERE guid_field <> '11111111111111111111111111111111' OR
+ guid_field <> '3f3e3c3b-3a30-3938-3736-353433a2313e';
+ QUERY PLAN
+------------------------------------------------------------------------------------------------------------------------------------------------
+ Aggregate
+ -> Seq Scan on guid1
+ Filter: ((guid_field <> '11111111-1111-1111-1111-111111111111'::uuid) OR (guid_field <> '3f3e3c3b-3a30-3938-3736-353433a2313e'::uuid))
+(3 rows)
+
+EXPLAIN (COSTS OFF)
+SELECT COUNT(*) FROM guid1 WHERE guid_field <= '22222222-2222-2222-2222-222222222222' OR
+ guid_field <= '11111111111111111111111111111111' OR
+ guid_field <= '3f3e3c3b-3a30-3938-3736-353433a2313e';
+ QUERY PLAN
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ Aggregate
+ -> Seq Scan on guid1
+ Filter: ((guid_field <= '22222222-2222-2222-2222-222222222222'::uuid) OR (guid_field <= '11111111-1111-1111-1111-111111111111'::uuid) OR (guid_field <= '3f3e3c3b-3a30-3938-3736-353433a2313e'::uuid))
+(3 rows)
+
+EXPLAIN (COSTS OFF)
+SELECT COUNT(*) FROM guid1 WHERE guid_field = '3f3e3c3b-3a30-3938-3736-353433a2313e' OR
+ guid_field = '11111111111111111111111111111111';
+ QUERY PLAN
+----------------------------------------------------------------------------------------------------------------------------------------------
+ Aggregate
+ -> Seq Scan on guid1
+ Filter: ((guid_field = '3f3e3c3b-3a30-3938-3736-353433a2313e'::uuid) OR (guid_field = '11111111-1111-1111-1111-111111111111'::uuid))
+(3 rows)
+
-- should fail
INSERT INTO guid1(guid_field) VALUES('11111111-1111-1111-1111-111111111111');
ERROR: duplicate key value violates unique constraint "guid1_unique_btree"
SELECT * FROM tenk1
WHERE thousand = 42 AND (tenthous = 1 OR tenthous = 3 OR tenthous = 42);
+EXPLAIN (COSTS OFF)
+SELECT * FROM tenk1
+ WHERE thousand = 42 AND (tenthous = 1 OR tenthous = (SELECT 1 + 2) OR tenthous = 42);
+SELECT * FROM tenk1
+ WHERE thousand = 42 AND (tenthous = 1 OR tenthous = (SELECT 1 + 2) OR tenthous = 42);
+
EXPLAIN (COSTS OFF)
SELECT count(*) FROM tenk1
WHERE hundred = 42 AND (thousand = 42 OR thousand = 99);
SELECT count(*) FROM tenk1
WHERE hundred = 42 AND (thousand = 42 OR thousand = 99);
+EXPLAIN (COSTS OFF)
+SELECT * FROM tenk1
+ WHERE thousand = 42 AND (tenthous = 1 OR tenthous = 3 OR tenthous = 42);
+SELECT * FROM tenk1
+ WHERE thousand = 42 AND (tenthous = 1 OR tenthous = 3 OR tenthous = 42);
+
+EXPLAIN (COSTS OFF)
+SELECT * FROM tenk1
+ WHERE thousand = 42 AND (tenthous = 1::numeric OR tenthous = 3::int4 OR tenthous = 42::numeric);
+
+EXPLAIN (COSTS OFF)
+SELECT * FROM tenk1
+ WHERE tenthous = 1::numeric OR tenthous = 3::int4 OR tenthous = 42::numeric;
+
+EXPLAIN (COSTS OFF)
+SELECT count(*) FROM tenk1
+ WHERE hundred = 42 AND (thousand = 42 OR thousand = 99);
+SELECT count(*) FROM tenk1
+ WHERE hundred = 42 AND (thousand = 42 OR thousand = 99);
+
+EXPLAIN (COSTS OFF)
+SELECT count(*) FROM tenk1
+ WHERE hundred = 42 AND (thousand < 42 OR thousand < 99 OR 43 > thousand OR 42 > thousand);
+SELECT count(*) FROM tenk1
+ WHERE hundred = 42 AND (thousand < 42 OR thousand < 99 OR 43 > thousand OR 42 > thousand);
+
+EXPLAIN (COSTS OFF)
+SELECT count(*) FROM tenk1
+ WHERE thousand = 42 AND (tenthous = 1 OR tenthous = 3) OR thousand = 41;
+SELECT count(*) FROM tenk1
+ WHERE thousand = 42 AND (tenthous = 1 OR tenthous = 3) OR thousand = 41;
+
+EXPLAIN (COSTS OFF)
+SELECT count(*) FROM tenk1
+ WHERE hundred = 42 AND (thousand = 42 OR thousand = 99 OR tenthous < 2) OR thousand = 41;
+SELECT count(*) FROM tenk1
+ WHERE hundred = 42 AND (thousand = 42 OR thousand = 99 OR tenthous < 2) OR thousand = 41;
+
+EXPLAIN (COSTS OFF)
+SELECT count(*) FROM tenk1
+ WHERE hundred = 42 AND (thousand = 42 OR thousand = 41 OR thousand = 99 AND tenthous = 2);
+SELECT count(*) FROM tenk1
+ WHERE hundred = 42 AND (thousand = 42 OR thousand = 41 OR thousand = 99 AND tenthous = 2);
+
+EXPLAIN (COSTS OFF)
+SELECT count(*) FROM tenk1, tenk2
+ WHERE tenk1.hundred = 42 AND (tenk2.thousand = 42 OR tenk1.thousand = 41 OR tenk2.tenthous = 2) AND
+ tenk2.hundred = tenk1.hundred;
+
+EXPLAIN (COSTS OFF)
+SELECT count(*) FROM tenk1, tenk2
+ WHERE tenk1.hundred = 42 AND (tenk2.thousand = 42 OR tenk2.thousand = 41 OR tenk2.tenthous = 2) AND
+ tenk2.hundred = tenk1.hundred;
+
+EXPLAIN (COSTS OFF)
+SELECT count(*) FROM tenk1 JOIN tenk2 ON
+ tenk1.hundred = 42 AND (tenk2.thousand = 42 OR tenk2.thousand = 41 OR tenk2.tenthous = 2) AND
+ tenk2.hundred = tenk1.hundred;
+
+EXPLAIN (COSTS OFF)
+SELECT count(*) FROM tenk1 LEFT JOIN tenk2 ON
+ tenk1.hundred = 42 AND (tenk2.thousand = 42 OR tenk2.thousand = 41 OR tenk2.tenthous = 2) AND
+ tenk2.hundred = tenk1.hundred;
--
-- Check behavior with duplicate index column contents
--
(a.unique1 = 1 and b.unique1 = 2) or
((a.unique2 = 3 or a.unique2 = 7) and b.hundred = 4);
+explain (costs off)
+select * from tenk1 a join tenk1 b on
+ (a.unique1 = 1 and b.unique1 = 2) or
+ ((a.unique2 = 3 or a.unique2 = 7) and b.hundred = 4);
+explain (costs off)
+select * from tenk1 a join tenk1 b on
+ (a.unique1 < 20 or a.unique1 = 3 or a.unique1 = 1 and b.unique1 = 2) or
+ ((a.unique2 = 3 or a.unique2 = 7) and b.hundred = 4);
+
--
-- test placement of movable quals in a parameterized join tree
--
CREATE OPERATOR <<< (procedure = op_leak, leftarg = int, rightarg = int,
restrict = scalarltsel);
SELECT * FROM rls_tbl WHERE a <<< 1000;
+EXPLAIN (COSTS OFF) SELECT * FROM rls_tbl WHERE a <<< 1000 or a <<< 900;
DROP OPERATOR <<< (int, int);
DROP FUNCTION op_leak(int, int);
RESET SESSION AUTHORIZATION;
CREATE OPERATOR <<< (procedure = op_leak, leftarg = int, rightarg = int,
restrict = scalarltsel);
SELECT * FROM tststats.priv_test_tbl WHERE a <<< 0 AND b <<< 0; -- Permission denied
+SELECT * FROM tststats.priv_test_tbl WHERE a <<< 0 OR b <<< 0;
DELETE FROM tststats.priv_test_tbl WHERE a <<< 0 AND b <<< 0; -- Permission denied
-- Grant access via a security barrier view, but hide all data
-- Should now have access via the view, but see nothing and leak nothing
SET SESSION AUTHORIZATION regress_stats_user1;
SELECT * FROM tststats.priv_test_view WHERE a <<< 0 AND b <<< 0; -- Should not leak
+SELECT * FROM tststats.priv_test_view WHERE a <<< 0 OR b <<< 0; -- Should not leak
DELETE FROM tststats.priv_test_view WHERE a <<< 0 AND b <<< 0; -- Should not leak
-- Grant table access, but hide all data with RLS
-- Should now have direct table access, but see nothing and leak nothing
SET SESSION AUTHORIZATION regress_stats_user1;
SELECT * FROM tststats.priv_test_tbl WHERE a <<< 0 AND b <<< 0; -- Should not leak
+SELECT * FROM tststats.priv_test_tbl WHERE a <<< 0 OR b <<< 0;
DELETE FROM tststats.priv_test_tbl WHERE a <<< 0 AND b <<< 0; -- Should not leak
-- privilege checks for pg_stats_ext and pg_stats_ext_exprs
-- unique index test
CREATE UNIQUE INDEX guid1_unique_BTREE ON guid1 USING BTREE (guid_field);
+
+EXPLAIN (COSTS OFF)
+SELECT COUNT(*) FROM guid1 WHERE guid_field <> '11111111111111111111111111111111' OR
+ guid_field <> '3f3e3c3b-3a30-3938-3736-353433a2313e';
+EXPLAIN (COSTS OFF)
+SELECT COUNT(*) FROM guid1 WHERE guid_field <= '22222222-2222-2222-2222-222222222222' OR
+ guid_field <= '11111111111111111111111111111111' OR
+ guid_field <= '3f3e3c3b-3a30-3938-3736-353433a2313e';
+EXPLAIN (COSTS OFF)
+SELECT COUNT(*) FROM guid1 WHERE guid_field = '3f3e3c3b-3a30-3938-3736-353433a2313e' OR
+ guid_field = '11111111111111111111111111111111';
+
-- should fail
INSERT INTO guid1(guid_field) VALUES('11111111-1111-1111-1111-111111111111');
projects / users / c2main / postgres.git / commitdiff