correct eq() method for Item_param (BUG#4233)

mysql-test/r/ps.result:
  eq() for parameters test
mysql-test/t/ps.test:
  eq() for parameters test
sql/item.h:
  correct eq() method for Item_param

1 files changed, 15 insertions, 0 deletions

diff --git a/mysql-test/t/ps.test b/mysql-test/t/ps.test
index 5af65242e7b..a3232fb15e9 100644
--- a/mysql-test/t/ps.test
+++ b/mysql-test/t/ps.test
@@ -178,4 +178,19 @@ drop table t1;
 prepare stmt1 from ' create table t1 (m int) as select ? as m ' ;
 execute stmt1 using @arg00;
 select m from t1;
+deallocate prepare stmt1;
+drop table t1;
+
+#
+# eq() for parameters
+#
+create table t1 (id int(10) unsigned NOT NULL default '0',
+                 name varchar(64) NOT NULL default '',
+                 PRIMARY KEY  (id), UNIQUE KEY `name` (`name`));
+insert into t1 values (1,'1'),(2,'2'),(3,'3'),(4,'4'),(5,'5'),(6,'6'),(7,'7');
+prepare stmt1 from 'select name from t1 where id=? or id=?';
+set @id1=1,@id2=6;
+execute stmt1 using @id1, @id2;
+select name from t1 where id=1 or id=6;
+deallocate prepare stmt1;
 drop table t1;