(0 rows)
-- Look for mergejoin operators that don't match their links.
--- A mergejoin link leads from an '=' operator to the
+-- An lsortop/rsortop link leads from an '=' operator to the
-- sort operator ('<' operator) that's appropriate for
-- its left-side or right-side data type.
+-- An ltcmpop/gtcmpop link leads from an '=' operator to the
+-- '<' or '>' operator of the same input datatypes.
+-- (If the '=' operator has identical L and R input datatypes,
+-- then lsortop, rsortop, and ltcmpop are all the same operator.)
SELECT p1.oid, p1.oprcode, p2.oid, p2.oprcode
FROM pg_operator AS p1, pg_operator AS p2
WHERE p1.oprlsortop = p2.oid AND
p1.oprleft != p2.oprleft OR
p1.oprleft != p2.oprright OR
p1.oprresult != 'bool'::regtype OR
- p2.oprresult != 'bool'::regtype OR
- p1.oprrsortop = 0);
+ p2.oprresult != 'bool'::regtype);
oid | oprcode | oid | oprcode
-----+---------+-----+---------
(0 rows)
p1.oprright != p2.oprleft OR
p1.oprright != p2.oprright OR
p1.oprresult != 'bool'::regtype OR
- p2.oprresult != 'bool'::regtype OR
- p1.oprlsortop = 0);
+ p2.oprresult != 'bool'::regtype);
oid | oprcode | oid | oprcode
-----+---------+-----+---------
(0 rows)
--- A mergejoinable = operator must have a commutator (usually itself)
--- as well as corresponding < and > operators. Note that the "corresponding"
--- operators have the same L and R input datatypes as the = operator,
--- whereas the operators linked to by oprlsortop and oprrsortop have input
--- datatypes L,L and R,R respectively.
-SELECT p1.oid, p1.oprname FROM pg_operator AS p1
-WHERE p1.oprlsortop != 0 AND
- p1.oprcom = 0;
- oid | oprname
------+---------
+SELECT p1.oid, p1.oprcode, p2.oid, p2.oprcode
+FROM pg_operator AS p1, pg_operator AS p2
+WHERE p1.oprltcmpop = p2.oid AND
+ (p1.oprname != '=' OR p2.oprname != '<' OR
+ p1.oprkind != 'b' OR p2.oprkind != 'b' OR
+ p1.oprleft != p2.oprleft OR
+ p1.oprright != p2.oprright OR
+ p1.oprresult != 'bool'::regtype OR
+ p2.oprresult != 'bool'::regtype);
+ oid | oprcode | oid | oprcode
+-----+---------+-----+---------
(0 rows)
-SELECT p1.oid, p1.oprname FROM pg_operator AS p1
-WHERE p1.oprlsortop != 0 AND NOT
- EXISTS(SELECT 1 FROM pg_operator AS p2 WHERE
- p2.oprname = '<' AND
- p2.oprleft = p1.oprleft AND
- p2.oprright = p1.oprright AND
- p2.oprkind = 'b');
- oid | oprname
+SELECT p1.oid, p1.oprcode, p2.oid, p2.oprcode
+FROM pg_operator AS p1, pg_operator AS p2
+WHERE p1.oprgtcmpop = p2.oid AND
+ (p1.oprname != '=' OR p2.oprname != '>' OR
+ p1.oprkind != 'b' OR p2.oprkind != 'b' OR
+ p1.oprleft != p2.oprleft OR
+ p1.oprright != p2.oprright OR
+ p1.oprresult != 'bool'::regtype OR
+ p2.oprresult != 'bool'::regtype);
+ oid | oprcode | oid | oprcode
+-----+---------+-----+---------
+(0 rows)
+
+-- Make sure all four links are specified if any are.
+SELECT p1.oid, p1.oprcode
+FROM pg_operator AS p1
+WHERE NOT ((oprlsortop = 0 AND oprrsortop = 0 AND
+ oprltcmpop = 0 AND oprgtcmpop = 0) OR
+ (oprlsortop != 0 AND oprrsortop != 0 AND
+ oprltcmpop != 0 AND oprgtcmpop != 0));
+ oid | oprcode
-----+---------
(0 rows)
+-- A mergejoinable = operator must have a commutator (usually itself).
SELECT p1.oid, p1.oprname FROM pg_operator AS p1
-WHERE p1.oprlsortop != 0 AND NOT
- EXISTS(SELECT 1 FROM pg_operator AS p2 WHERE
- p2.oprname = '>' AND
- p2.oprleft = p1.oprleft AND
- p2.oprright = p1.oprright AND
- p2.oprkind = 'b');
+WHERE p1.oprlsortop != 0 AND
+ p1.oprcom = 0;
oid | oprname
-----+---------
(0 rows)
p1.oid = p2.oid);
-- Look for mergejoin operators that don't match their links.
--- A mergejoin link leads from an '=' operator to the
+-- An lsortop/rsortop link leads from an '=' operator to the
-- sort operator ('<' operator) that's appropriate for
-- its left-side or right-side data type.
+-- An ltcmpop/gtcmpop link leads from an '=' operator to the
+-- '<' or '>' operator of the same input datatypes.
+-- (If the '=' operator has identical L and R input datatypes,
+-- then lsortop, rsortop, and ltcmpop are all the same operator.)
SELECT p1.oid, p1.oprcode, p2.oid, p2.oprcode
FROM pg_operator AS p1, pg_operator AS p2
p1.oprleft != p2.oprleft OR
p1.oprleft != p2.oprright OR
p1.oprresult != 'bool'::regtype OR
- p2.oprresult != 'bool'::regtype OR
- p1.oprrsortop = 0);
+ p2.oprresult != 'bool'::regtype);
SELECT p1.oid, p1.oprcode, p2.oid, p2.oprcode
FROM pg_operator AS p1, pg_operator AS p2
p1.oprright != p2.oprleft OR
p1.oprright != p2.oprright OR
p1.oprresult != 'bool'::regtype OR
- p2.oprresult != 'bool'::regtype OR
- p1.oprlsortop = 0);
+ p2.oprresult != 'bool'::regtype);
--- A mergejoinable = operator must have a commutator (usually itself)
--- as well as corresponding < and > operators. Note that the "corresponding"
--- operators have the same L and R input datatypes as the = operator,
--- whereas the operators linked to by oprlsortop and oprrsortop have input
--- datatypes L,L and R,R respectively.
+SELECT p1.oid, p1.oprcode, p2.oid, p2.oprcode
+FROM pg_operator AS p1, pg_operator AS p2
+WHERE p1.oprltcmpop = p2.oid AND
+ (p1.oprname != '=' OR p2.oprname != '<' OR
+ p1.oprkind != 'b' OR p2.oprkind != 'b' OR
+ p1.oprleft != p2.oprleft OR
+ p1.oprright != p2.oprright OR
+ p1.oprresult != 'bool'::regtype OR
+ p2.oprresult != 'bool'::regtype);
-SELECT p1.oid, p1.oprname FROM pg_operator AS p1
-WHERE p1.oprlsortop != 0 AND
- p1.oprcom = 0;
+SELECT p1.oid, p1.oprcode, p2.oid, p2.oprcode
+FROM pg_operator AS p1, pg_operator AS p2
+WHERE p1.oprgtcmpop = p2.oid AND
+ (p1.oprname != '=' OR p2.oprname != '>' OR
+ p1.oprkind != 'b' OR p2.oprkind != 'b' OR
+ p1.oprleft != p2.oprleft OR
+ p1.oprright != p2.oprright OR
+ p1.oprresult != 'bool'::regtype OR
+ p2.oprresult != 'bool'::regtype);
-SELECT p1.oid, p1.oprname FROM pg_operator AS p1
-WHERE p1.oprlsortop != 0 AND NOT
- EXISTS(SELECT 1 FROM pg_operator AS p2 WHERE
- p2.oprname = '<' AND
- p2.oprleft = p1.oprleft AND
- p2.oprright = p1.oprright AND
- p2.oprkind = 'b');
+-- Make sure all four links are specified if any are.
+
+SELECT p1.oid, p1.oprcode
+FROM pg_operator AS p1
+WHERE NOT ((oprlsortop = 0 AND oprrsortop = 0 AND
+ oprltcmpop = 0 AND oprgtcmpop = 0) OR
+ (oprlsortop != 0 AND oprrsortop != 0 AND
+ oprltcmpop != 0 AND oprgtcmpop != 0));
+
+-- A mergejoinable = operator must have a commutator (usually itself).
SELECT p1.oid, p1.oprname FROM pg_operator AS p1
-WHERE p1.oprlsortop != 0 AND NOT
- EXISTS(SELECT 1 FROM pg_operator AS p2 WHERE
- p2.oprname = '>' AND
- p2.oprleft = p1.oprleft AND
- p2.oprright = p1.oprright AND
- p2.oprkind = 'b');
+WHERE p1.oprlsortop != 0 AND
+ p1.oprcom = 0;
-- Mergejoinable operators across datatypes must come in closed sets, that
-- is if you provide int2 = int4 and int4 = int8 then you must also provide