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rafsun42 pushed a commit to branch PG11
in repository https://gitbox.apache.org/repos/asf/age.git
The following commit(s) were added to refs/heads/PG11 by this push:
new a1cc1c9f Refactor the IN operator to use '= ANY()' syntax (#1236)
(#1488)
a1cc1c9f is described below
commit a1cc1c9f6f2d5bebbb67ce7932503385232c76b0
Author: John Gemignani <[email protected]>
AuthorDate: Thu Jan 4 14:57:17 2024 -0800
Refactor the IN operator to use '= ANY()' syntax (#1236) (#1488)
This change reduces use of internal function calls from the
IN implementation to optimize performance. This also changes
IN behavior to correctly return NULL upon NULL elements
included in the list that IN checks against.
Added and corrected regression tests.
Corrected for lack of A_Const field isnull and needed #include
files.
Corrected for lack of function availability in PG12
Co-authored by: Josh Innis <[email protected]>
Co-authored-by: Dehowe Feng <[email protected]>
---
regress/expected/expr.out | 77 +++++++++++++++++--
regress/sql/expr.sql | 20 ++++-
src/backend/parser/cypher_expr.c | 152 ++++++++++++++++++++++++++++++++++---
src/backend/utils/adt/agtype_ops.c | 2 +-
4 files changed, 232 insertions(+), 19 deletions(-)
diff --git a/regress/expected/expr.out b/regress/expected/expr.out
index d02c8ac1..cc76f3db 100644
--- a/regress/expected/expr.out
+++ b/regress/expected/expr.out
@@ -197,7 +197,28 @@ $$RETURN {bool: true, int: 1} IN ['str', 1, 1.0, true,
null, {bool: true, int: 1
t
(1 row)
+SELECT * FROM cypher('expr',
+$$RETURN 1 IN [1.0, [NULL]]$$) AS r(c boolean);
+ c
+---
+ t
+(1 row)
+
+SELECT * FROM cypher('expr',
+$$RETURN [NULL] IN [1.0, [NULL]]$$) AS r(c boolean);
+ c
+---
+ t
+(1 row)
+
-- should return SQL null, nothing
+SELECT * FROM cypher('expr',
+$$RETURN true IN NULL $$) AS r(c boolean);
+ c
+---
+
+(1 row)
+
SELECT * FROM cypher('expr',
$$RETURN null IN ['str', 1, 1.0, true, null]$$) AS r(c boolean);
c
@@ -219,39 +240,81 @@ $$RETURN 'str' IN null $$) AS r(c boolean);
(1 row)
--- should all return false
SELECT * FROM cypher('expr',
$$RETURN 0 IN ['str', 1, 1.0, true, null]$$) AS r(c boolean);
c
---
- f
+
(1 row)
SELECT * FROM cypher('expr',
$$RETURN 1.1 IN ['str', 1, 1.0, true, null]$$) AS r(c boolean);
c
---
- f
+
(1 row)
SELECT * FROM cypher('expr',
$$RETURN 'Str' IN ['str', 1, 1.0, true, null]$$) AS r(c boolean);
c
---
- f
+
(1 row)
SELECT * FROM cypher('expr',
$$RETURN [1,3,5,[2,4,5]] IN ['str', 1, 1.0, true, null, [1,3,5,[2,4,6]]]$$) AS
r(c boolean);
c
---
- f
+
(1 row)
SELECT * FROM cypher('expr',
$$RETURN {bool: true, int: 2} IN ['str', 1, 1.0, true, null, {bool: true, int:
1}, [1,3,5,[2,4,6]]]$$) AS r(c boolean);
c
---
+
+(1 row)
+
+-- should return false
+SELECT * FROM cypher('expr',
+$$RETURN 'str' IN ['StR', 1, true]$$) AS r(c boolean);
+ c
+---
+ f
+(1 row)
+
+SELECT * FROM cypher('expr',
+$$RETURN 2 IN ['StR', 1, true]$$) AS r(c boolean);
+ c
+---
+ f
+(1 row)
+
+SELECT * FROM cypher('expr',
+$$RETURN false IN ['StR', 1, true]$$) AS r(c boolean);
+ c
+---
+ f
+(1 row)
+
+SELECT * FROM cypher('expr',
+$$RETURN [1,2] IN ['StR', 1, 2, true]$$) AS r(c boolean);
+ c
+---
+ f
+(1 row)
+
+SELECT * FROM cypher('expr',
+$$RETURN 1 in [[1]]$$) AS r(c boolean);
+ c
+---
+ f
+(1 row)
+
+SELECT * FROM cypher('expr',
+$$RETURN 1 IN [[null]]$$) AS r(c boolean);
+ c
+---
f
(1 row)
@@ -259,9 +322,13 @@ $$RETURN {bool: true, int: 2} IN ['str', 1, 1.0, true,
null, {bool: true, int: 1
SELECT * FROM cypher('expr',
$$RETURN null IN 'str' $$) AS r(c boolean);
ERROR: object of IN must be a list
+LINE 2: $$RETURN null IN 'str' $$) AS r(c boolean);
+ ^
SELECT * FROM cypher('expr',
$$RETURN 'str' IN 'str' $$) AS r(c boolean);
ERROR: object of IN must be a list
+LINE 2: $$RETURN 'str' IN 'str' $$) AS r(c boolean);
+ ^
-- list access
SELECT * FROM cypher('expr',
$$RETURN [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10][0]$$) AS r(c agtype);
diff --git a/regress/sql/expr.sql b/regress/sql/expr.sql
index 9aab4d36..61ab5424 100644
--- a/regress/sql/expr.sql
+++ b/regress/sql/expr.sql
@@ -120,14 +120,19 @@ SELECT * FROM cypher('expr',
$$RETURN [1,3,5,[2,4,6]] IN ['str', 1, 1.0, true, null, [1,3,5,[2,4,6]]]$$) AS
r(c boolean);
SELECT * FROM cypher('expr',
$$RETURN {bool: true, int: 1} IN ['str', 1, 1.0, true, null, {bool: true, int:
1}, [1,3,5,[2,4,6]]]$$) AS r(c boolean);
+SELECT * FROM cypher('expr',
+$$RETURN 1 IN [1.0, [NULL]]$$) AS r(c boolean);
+SELECT * FROM cypher('expr',
+$$RETURN [NULL] IN [1.0, [NULL]]$$) AS r(c boolean);
-- should return SQL null, nothing
SELECT * FROM cypher('expr',
+$$RETURN true IN NULL $$) AS r(c boolean);
+SELECT * FROM cypher('expr',
$$RETURN null IN ['str', 1, 1.0, true, null]$$) AS r(c boolean);
SELECT * FROM cypher('expr',
$$RETURN null IN ['str', 1, 1.0, true]$$) AS r(c boolean);
SELECT * FROM cypher('expr',
$$RETURN 'str' IN null $$) AS r(c boolean);
--- should all return false
SELECT * FROM cypher('expr',
$$RETURN 0 IN ['str', 1, 1.0, true, null]$$) AS r(c boolean);
SELECT * FROM cypher('expr',
@@ -138,6 +143,19 @@ SELECT * FROM cypher('expr',
$$RETURN [1,3,5,[2,4,5]] IN ['str', 1, 1.0, true, null, [1,3,5,[2,4,6]]]$$) AS
r(c boolean);
SELECT * FROM cypher('expr',
$$RETURN {bool: true, int: 2} IN ['str', 1, 1.0, true, null, {bool: true, int:
1}, [1,3,5,[2,4,6]]]$$) AS r(c boolean);
+-- should return false
+SELECT * FROM cypher('expr',
+$$RETURN 'str' IN ['StR', 1, true]$$) AS r(c boolean);
+SELECT * FROM cypher('expr',
+$$RETURN 2 IN ['StR', 1, true]$$) AS r(c boolean);
+SELECT * FROM cypher('expr',
+$$RETURN false IN ['StR', 1, true]$$) AS r(c boolean);
+SELECT * FROM cypher('expr',
+$$RETURN [1,2] IN ['StR', 1, 2, true]$$) AS r(c boolean);
+SELECT * FROM cypher('expr',
+$$RETURN 1 in [[1]]$$) AS r(c boolean);
+SELECT * FROM cypher('expr',
+$$RETURN 1 IN [[null]]$$) AS r(c boolean);
-- should error - ERROR: object of IN must be a list
SELECT * FROM cypher('expr',
$$RETURN null IN 'str' $$) AS r(c boolean);
diff --git a/src/backend/parser/cypher_expr.c b/src/backend/parser/cypher_expr.c
index daf4ae1e..0a6f02e8 100644
--- a/src/backend/parser/cypher_expr.c
+++ b/src/backend/parser/cypher_expr.c
@@ -27,6 +27,7 @@
#include "miscadmin.h"
#include "catalog/pg_type_d.h"
#include "nodes/nodeFuncs.h"
+#include "optimizer/var.h"
#include "parser/parse_coerce.h"
#include "parser/parse_collate.h"
#include "parser/parse_func.h"
@@ -483,26 +484,153 @@ static Node
*transform_cypher_comparison_aexpr_OP(cypher_parsestate *cpstate,
return (Node *)transform_AEXPR_OP(cpstate, n);
}
+/* copied over from PostgreSQL version 13 function of the same name */
+static bool verify_common_type(Oid common_type, List *exprs)
+{
+ ListCell *lc;
+
+ foreach(lc, exprs)
+ {
+ Node *nexpr = (Node *) lfirst(lc);
+ Oid ntype = exprType(nexpr);
+
+ if (!can_coerce_type(1, &ntype, &common_type, COERCION_IMPLICIT))
+ {
+ return false;
+ }
+ }
+ return true;
+}
static Node *transform_AEXPR_IN(cypher_parsestate *cpstate, A_Expr *a)
{
- Oid func_in_oid;
- FuncExpr *result;
- List *args = NIL;
+ ParseState *pstate = (ParseState *)cpstate;
+ cypher_list *rexpr;
+ Node *result = NULL;
+ Node *lexpr;
+ List *rexprs;
+ List *rvars;
+ List *rnonvars;
+ bool useOr;
+ ListCell *l;
+
+ /* Check for null arguments in the list to return NULL*/
+ if (!is_ag_node(a->rexpr, cypher_list))
+ {
+ if (nodeTag(a->rexpr) == T_A_Const)
+ {
+ A_Const *r_a_const = (A_Const*)a->rexpr;
+ if (r_a_const->val.type == T_Null)
+ {
+ return (Node *)makeConst(AGTYPEOID, -1, InvalidOid, -1,
+ (Datum)NULL, true, false);
+ }
+ }
- args = lappend(args, transform_cypher_expr_recurse(cpstate, a->rexpr));
- args = lappend(args, transform_cypher_expr_recurse(cpstate, a->lexpr));
+ ereport(ERROR, (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("object of IN must be a list")));
+ }
- /* get the agtype_access_slice function */
- func_in_oid = get_ag_func_oid("agtype_in_operator", 2, AGTYPEOID,
- AGTYPEOID);
+ Assert(is_ag_node(a->rexpr, cypher_list));
+
+ // If the operator is <>, combine with AND not OR.
+ if (strcmp(strVal(linitial(a->name)), "<>") == 0)
+ {
+ useOr = false;
+ }
+ else
+ {
+ useOr = true;
+ }
+
+ lexpr = transform_cypher_expr_recurse(cpstate, a->lexpr);
+
+ rexprs = rvars = rnonvars = NIL;
+
+ rexpr = (cypher_list *)a->rexpr;
+
+ foreach(l, (List *) rexpr->elems)
+ {
+ Node *rexpr = transform_cypher_expr_recurse(cpstate, lfirst(l));
+
+ rexprs = lappend(rexprs, rexpr);
+ if (contain_vars_of_level(rexpr, 0))
+ {
+ rvars = lappend(rvars, rexpr);
+ }
+ else
+ {
+ rnonvars = lappend(rnonvars, rexpr);
+ }
+ }
- result = makeFuncExpr(func_in_oid, AGTYPEOID, args, InvalidOid, InvalidOid,
- COERCE_EXPLICIT_CALL);
+ /*
+ * ScalarArrayOpExpr is only going to be useful if there's more than one
+ * non-Var righthand item.
+ */
+ if (list_length(rnonvars) > 1)
+ {
+ List *allexprs;
+ Oid scalar_type;
+ List *aexprs;
+ ArrayExpr *newa;
+
+ allexprs = list_concat(list_make1(lexpr), rnonvars);
- result->location = exprLocation(a->lexpr);
+ scalar_type = AGTYPEOID;
+
+ Assert(verify_common_type(scalar_type, allexprs));
+ /*
+ * coerce all the right-hand non-Var inputs to the common type
+ * and build an ArrayExpr for them.
+ */
+
+ aexprs = NIL;
+ foreach(l, rnonvars)
+ {
+ Node *rexpr = (Node *) lfirst(l);
- return (Node *)result;
+ rexpr = coerce_to_common_type(pstate, rexpr, AGTYPEOID, "IN");
+ aexprs = lappend(aexprs, rexpr);
+ }
+ newa = makeNode(ArrayExpr);
+ newa->array_typeid = get_array_type(AGTYPEOID);
+ /* array_collid will be set by parse_collate.c */
+ newa->element_typeid = AGTYPEOID;
+ newa->elements = aexprs;
+ newa->multidims = false;
+ result = (Node *) make_scalar_array_op(pstate, a->name, useOr,
+ lexpr, (Node *) newa,
+ a->location);
+
+ /* Consider only the Vars (if any) in the loop below */
+ rexprs = rvars;
+ }
+
+ // Must do it the hard way, with a boolean expression tree.
+ foreach(l, rexprs)
+ {
+ Node *rexpr = (Node *) lfirst(l);
+ Node *cmp;
+
+ // Ordinary scalar operator
+ cmp = (Node *) make_op(pstate, a->name, copyObject(lexpr), rexpr,
+ pstate->p_last_srf, a->location);
+
+ cmp = coerce_to_boolean(pstate, cmp, "IN");
+ if (result == NULL)
+ {
+ result = cmp;
+ }
+ else
+ {
+ result = (Node *) makeBoolExpr(useOr ? OR_EXPR : AND_EXPR,
+ list_make2(result, cmp),
+ a->location);
+ }
+ }
+
+ return result;
}
static Node *transform_BoolExpr(cypher_parsestate *cpstate, BoolExpr *expr)
diff --git a/src/backend/utils/adt/agtype_ops.c
b/src/backend/utils/adt/agtype_ops.c
index 17fa3637..c2d40e73 100644
--- a/src/backend/utils/adt/agtype_ops.c
+++ b/src/backend/utils/adt/agtype_ops.c
@@ -1403,7 +1403,7 @@ Datum agtype_exists_all_agtype(PG_FUNCTION_ARGS)
PG_FUNCTION_INFO_V1(agtype_contains);
/*
- * <@ operator for agtype. Returns true if the right agtype path/value entries
+ * @> operator for agtype. Returns true if the right agtype path/value entries
* contained at the top level within the left agtype value
*/
Datum agtype_contains(PG_FUNCTION_ARGS)
