From 8e72b760aa0a407f68bf37df37d31caa382d2f82 Mon Sep 17 00:00:00 2001
From: unknown <gkodinov/kgeorge@magare.gmz>
Date: Tue, 10 Apr 2007 19:08:08 +0300
Subject: [PATCH] Bug #19372: Added a test case. The problem was fixed by the
 fix for bug #17379. The problem was that because of some conditions the
 optimizer always preferred range or full index scan access methods to lookup
 access methods even when the latter were much cheaper.

mysql-test/r/select.result:
  Bug #19372: test case.
  The problem was fixed by the patch for bug #17379
mysql-test/t/select.test:
  Bug #19372: test case.
  The problem was fixed by the patch for bug #17379
---
 mysql-test/r/select.result |  9 +++++++++
 mysql-test/t/select.test   | 13 +++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/mysql-test/r/select.result b/mysql-test/r/select.result
index b501d547e0a..bfe0b9d19df 100644
--- a/mysql-test/r/select.result
+++ b/mysql-test/r/select.result
@@ -3986,4 +3986,13 @@ t2.access_id IN (1,4) AND t.access_id IS NULL AND t2.faq_id in (265);
 faq_id
 265
 DROP TABLE t1,t2;
+CREATE TABLE t1 (a INT, b INT, KEY inx (b,a));
+INSERT INTO t1 VALUES (1,1), (1,2), (1,3), (1,4), (1,5), (1, 6), (1,7);
+EXPLAIN SELECT COUNT(*) FROM t1 f1 INNER JOIN t1 f2
+ON ( f1.b=f2.b AND f1.a<f2.a ) 
+WHERE 1 AND f1.b NOT IN (100,2232,3343,51111);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	f1	index	inx	inx	10	NULL	7	Using where; Using index
+1	SIMPLE	f2	ref	inx	inx	5	test.f1.b	1	Using where; Using index
+DROP TABLE t1;
 End of 5.0 tests
diff --git a/mysql-test/t/select.test b/mysql-test/t/select.test
index c5c7d07ee25..56b2f1b02b8 100644
--- a/mysql-test/t/select.test
+++ b/mysql-test/t/select.test
@@ -3357,4 +3357,17 @@ SELECT t2.faq_id
 
 DROP TABLE t1,t2;
 
+
+#
+# Bug #19372: Optimizer does not use index anymore when WHERE index NOT IN
+# () is added
+#
+CREATE TABLE t1 (a INT, b INT, KEY inx (b,a));
+
+INSERT INTO t1 VALUES (1,1), (1,2), (1,3), (1,4), (1,5), (1, 6), (1,7);
+EXPLAIN SELECT COUNT(*) FROM t1 f1 INNER JOIN t1 f2
+    ON ( f1.b=f2.b AND f1.a<f2.a ) 
+    WHERE 1 AND f1.b NOT IN (100,2232,3343,51111);
+DROP TABLE t1;    
+
 --echo End of 5.0 tests