Fixed bug #22753.

After the patch for big 21698 equality propagation stopped
working for BETWEEN and IN predicates with STRING arguments.
This changeset completes the solution of the above patch.

mysql-test/r/select.result

@@ -3517,3 +3517,32 @@ id	a	b	c	d	e
 2	NULL	NULL	NULL	2	40
 2	NULL	NULL	NULL	2	50
 DROP TABLE t1,t2,t3;
+CREATE TABLE t1 (pk varchar(10) PRIMARY KEY, fk varchar(16));
+CREATE TABLE t2 (pk varchar(16) PRIMARY KEY, fk varchar(10));
+INSERT INTO t1 VALUES
+('d','dddd'), ('i','iii'), ('a','aa'), ('b','bb'), ('g','gg'), 
+('e','eee'), ('c','cccc'), ('h','hhh'), ('j','jjj'), ('f','fff');
+INSERT INTO t2 VALUES
+('jjj', 'j'), ('cc','c'), ('ccc','c'), ('aaa', 'a'), ('jjjj','j'),
+('hhh','h'), ('gg','g'), ('fff','f'), ('ee','e'), ('ffff','f'),
+('bbb','b'), ('ff','f'), ('cccc','c'), ('dddd','d'), ('jj','j'),
+('aaaa','a'), ('bb','b'), ('eeee','e'), ('aa','a'), ('hh','h');
+EXPLAIN SELECT t2.* 
+FROM t1 JOIN t2 ON t2.fk=t1.pk
+WHERE t2.fk < 'c' AND t2.pk=t1.fk;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	range	PRIMARY	PRIMARY	12	NULL	3	Using where
+1	SIMPLE	t2	ref	PRIMARY	PRIMARY	18	test.t1.fk	1	Using where
+EXPLAIN SELECT t2.* 
+FROM t1 JOIN t2 ON t2.fk=t1.pk 
+WHERE t2.fk BETWEEN 'a' AND 'b' AND t2.pk=t1.fk;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	range	PRIMARY	PRIMARY	12	NULL	2	Using where
+1	SIMPLE	t2	ref	PRIMARY	PRIMARY	18	test.t1.fk	1	Using where
+EXPLAIN SELECT t2.* 
+FROM t1 JOIN t2 ON t2.fk=t1.pk 
+WHERE t2.fk IN ('a','b') AND t2.pk=t1.fk;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	range	PRIMARY	PRIMARY	12	NULL	2	Using where
+1	SIMPLE	t2	ref	PRIMARY	PRIMARY	18	test.t1.fk	1	Using where
+DROP TABLE t1,t2;

mysql-test/t/select.test

@@ -2996,5 +2996,32 @@ SELECT * FROM t1 LEFT JOIN t2 ON t2.b=t1.a INNER JOIN t3 ON t3.d=t1.id
 SELECT * FROM t1 LEFT JOIN t2 ON t2.b=t1.a INNER JOIN t3 ON t3.d=t1.id
   WHERE t1.id=2;
 
-
 DROP TABLE t1,t2,t3;
+
+#
+# Bug #22735: no equality propagation for BETWEEN and IN with STRING arguments
+#
+
+CREATE TABLE t1 (pk varchar(10) PRIMARY KEY, fk varchar(16));
+CREATE TABLE t2 (pk varchar(16) PRIMARY KEY, fk varchar(10));
+
+INSERT INTO t1 VALUES
+  ('d','dddd'), ('i','iii'), ('a','aa'), ('b','bb'), ('g','gg'), 
+  ('e','eee'), ('c','cccc'), ('h','hhh'), ('j','jjj'), ('f','fff');
+INSERT INTO t2 VALUES
+  ('jjj', 'j'), ('cc','c'), ('ccc','c'), ('aaa', 'a'), ('jjjj','j'),
+  ('hhh','h'), ('gg','g'), ('fff','f'), ('ee','e'), ('ffff','f'),
+  ('bbb','b'), ('ff','f'), ('cccc','c'), ('dddd','d'), ('jj','j'),
+  ('aaaa','a'), ('bb','b'), ('eeee','e'), ('aa','a'), ('hh','h');
+
+EXPLAIN SELECT t2.* 
+  FROM t1 JOIN t2 ON t2.fk=t1.pk
+    WHERE t2.fk < 'c' AND t2.pk=t1.fk;
+EXPLAIN SELECT t2.* 
+  FROM t1 JOIN t2 ON t2.fk=t1.pk 
+    WHERE t2.fk BETWEEN 'a' AND 'b' AND t2.pk=t1.fk;
+EXPLAIN SELECT t2.* 
+  FROM t1 JOIN t2 ON t2.fk=t1.pk 
+    WHERE t2.fk IN ('a','b') AND t2.pk=t1.fk;
+
+DROP TABLE t1,t2;

sql/item_cmpfunc.h

@@ -446,6 +446,7 @@ public:
     negated= !negated;
     return this;
   }
+  bool subst_argument_checker(byte **arg) { return TRUE; }
 };