merge::records_in_range and optimizer

1 files changed, 33 insertions, 0 deletions

diff --git a/mysql-test/t/merge.test b/mysql-test/t/merge.test
index 55a71cc0ab8..2199f50fb16 100644
--- a/mysql-test/t/merge.test
+++ b/mysql-test/t/merge.test
@@ -204,3 +204,36 @@ create temporary table t6 (a int not null) TYPE=MERGE UNION=(t4,t5);
 select * from t6;
 drop table if exists t1, t2, t3, t4, t5, t6;
 
+#
+# testing merge::records_in_range and optimizer
+#
+
+DROP TABLE IF EXISTS t1, t2;
+CREATE TABLE t1 (
+  fileset_id tinyint(3) unsigned NOT NULL default '0',
+  file_code varchar(32) NOT NULL default '',
+  fileset_root_id tinyint(3) unsigned NOT NULL default '0',
+  PRIMARY KEY  (fileset_id,file_code),
+  KEY files (fileset_id,fileset_root_id)
+) TYPE=MyISAM;
+INSERT INTO t1 VALUES (2, '0000000111', 1), (2, '0000000112', 1), (2, '0000000113', 1),
+(2, '0000000114', 1), (2, '0000000115', 1), (2, '0000000116', 1), (2, '0000000117', 1),
+(2, '0000000118', 1), (2, '0000000119', 1), (2, '0000000120', 1);
+CREATE TABLE t2 (
+  fileset_id tinyint(3) unsigned NOT NULL default '0',
+  file_code varchar(32) NOT NULL default '',
+  fileset_root_id tinyint(3) unsigned NOT NULL default '0',
+  PRIMARY KEY  (fileset_id,file_code),
+  KEY files (fileset_id,fileset_root_id)
+) TYPE=MRG_MyISAM UNION=(t1);
+
+EXPLAIN SELECT * FROM t2 IGNORE INDEX (files) WHERE fileset_id = 2
+AND file_code BETWEEN '0000000115' AND '0000000120' LIMIT 1;
+EXPLAIN SELECT * FROM t2 WHERE fileset_id = 2
+AND file_code BETWEEN '0000000115' AND '0000000120' LIMIT 1;
+EXPLAIN SELECT * FROM t1 WHERE fileset_id = 2
+AND file_code BETWEEN '0000000115' AND '0000000120' LIMIT 1;
+EXPLAIN SELECT * FROM t2 WHERE fileset_id = 2
+AND file_code = '0000000115' LIMIT 1;
+DROP TABLE IF EXISTS t1, t2;
+