Adding more test coverage

mysql-test/main/sort_nest.result

@@ -2278,6 +2278,26 @@ ORDER BY t1.b LIMIT 10;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ref	a,a_b	a_b	5	const	3	Using index condition; Using where
 1	SIMPLE	t2	ref	b,c	b	5	test.t1.b	1	Using where
+#
+# Using index condition should not be present
+#
+SELECT * FROM t1,t2
+WHERE
+t1.a=2 AND t2.c >= 1 AND
+t1.b=t2.b
+ORDER BY t1.b DESC LIMIT 10;
+a	b	c	a	b	c
+2	10	4	2	10	4
+2	9	3	2	9	3
+2	8	2	2	8	2
+EXPLAIN SELECT * FROM t1,t2
+WHERE
+t1.a=2 AND t2.c >= 1 AND
+t1.b=t2.b
+ORDER BY t1.b DESC LIMIT 10;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ref	a,a_b	a_b	5	const	3	Using where
+1	SIMPLE	t2	ref	b,c	b	5	test.t1.b	1	Using where
 drop table t1,t2;
 # TESTS with INDEX HINTS
 create table t0 (a int);

mysql-test/main/sort_nest.test

@@ -909,6 +909,20 @@ ORDER BY t1.b LIMIT 10;
 eval $query;
 eval EXPLAIN $query;
 
+--echo #
+--echo # Using index condition should not be present
+--echo #
+
+let $query=
+SELECT * FROM t1,t2
+WHERE
+  t1.a=2 AND t2.c >= 1 AND
+  t1.b=t2.b
+ORDER BY t1.b DESC LIMIT 10;
+
+eval $query;
+eval EXPLAIN $query;
+
 drop table t1,t2;