Made sure that the test case for bug 28404 use the correct statistics.

mysql-test/r/order_by.result

@@ -1090,21 +1090,25 @@ INSERT INTO t1 (c2,c3) SELECT c2,c3 FROM t1;
 INSERT INTO t1 (c2,c3) SELECT c2,c3 FROM t1;
 INSERT INTO t1 (c2,c3) SELECT c2,c3 FROM t1;
 INSERT INTO t1 (c2,c3) SELECT c2,c3 FROM t1;
+UPDATE t1 SET c2=20 WHERE id%100 = 0;
 SELECT COUNT(*) FROM t1;
 COUNT(*)
 40960
+ANALYZE TABLE t1;
+Table	Op	Msg_type	Msg_text
+test.t1	analyze	status	OK
 EXPLAIN SELECT id,c3 FROM t1 WHERE c2=11 ORDER BY c3 LIMIT 20;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	index	k2	k3	5	NULL	88	Using where
-EXPLAIN SELECT id,c3 FROM t1 WHERE c2=11 ORDER BY c3 LIMIT 100;
+EXPLAIN SELECT id,c3 FROM t1 WHERE c2=11 ORDER BY c3 LIMIT 4000;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ref	k2	k2	5	const	9300	Using where; Using filesort
-EXPLAIN SELECT id,c3 FROM t1 WHERE c2 BETWEEN 10 AND 12 ORDER BY c3 LIMIT 100;
+EXPLAIN SELECT id,c3 FROM t1 WHERE c2 BETWEEN 10 AND 12 ORDER BY c3 LIMIT 20;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index	k2	k3	5	NULL	316	Using where
-EXPLAIN SELECT id,c3 FROM t1 WHERE c2 BETWEEN 10 AND 12 ORDER BY c3 LIMIT 2000;
+1	SIMPLE	t1	index	k2	k3	5	NULL	63	Using where
+EXPLAIN SELECT id,c3 FROM t1 WHERE c2 BETWEEN 20 AND 30 ORDER BY c3 LIMIT 4000;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	k2	k2	5	NULL	12937	Using where; Using filesort
+1	SIMPLE	t1	range	k2	k2	5	NULL	349	Using where; Using filesort
 SELECT id,c3 FROM t1 WHERE c2=11 ORDER BY c3 LIMIT 20;
 id	c3
 6	14

mysql-test/t/order_by.test

@@ -765,13 +765,16 @@ INSERT INTO t1 (c2,c3) SELECT c2,c3 FROM t1;
 INSERT INTO t1 (c2,c3) SELECT c2,c3 FROM t1;
 INSERT INTO t1 (c2,c3) SELECT c2,c3 FROM t1;
 INSERT INTO t1 (c2,c3) SELECT c2,c3 FROM t1;
+UPDATE t1 SET c2=20 WHERE id%100 = 0;
 
 SELECT COUNT(*) FROM t1;
 
+ANALYZE TABLE t1;
+
 EXPLAIN SELECT id,c3 FROM t1 WHERE c2=11 ORDER BY c3 LIMIT 20;
-EXPLAIN SELECT id,c3 FROM t1 WHERE c2=11 ORDER BY c3 LIMIT 100;
-EXPLAIN SELECT id,c3 FROM t1 WHERE c2 BETWEEN 10 AND 12 ORDER BY c3 LIMIT 100;
-EXPLAIN SELECT id,c3 FROM t1 WHERE c2 BETWEEN 10 AND 12 ORDER BY c3 LIMIT 2000;
+EXPLAIN SELECT id,c3 FROM t1 WHERE c2=11 ORDER BY c3 LIMIT 4000;
+EXPLAIN SELECT id,c3 FROM t1 WHERE c2 BETWEEN 10 AND 12 ORDER BY c3 LIMIT 20;
+EXPLAIN SELECT id,c3 FROM t1 WHERE c2 BETWEEN 20 AND 30 ORDER BY c3 LIMIT 4000;
 
 SELECT id,c3 FROM t1 WHERE c2=11 ORDER BY c3 LIMIT 20;