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+#
+# Test problem with characters < ' ' at end of strings (Bug #3152)
+#
+
+-- source include/have_innodb.inc
+--disable_warnings
+drop table if exists t1;
+--enable_warnings
+
+select 'a' = 'a', 'a' = 'a ', 'a ' = 'a';
+select 'a\0' = 'a', 'a\0' < 'a', 'a\0' > 'a';
+select 'a' = 'a\0', 'a' < 'a\0', 'a' > 'a\0';
+select 'a\0' = 'a ', 'a\0' < 'a ', 'a\0' > 'a ';
+select 'a ' = 'a\0', 'a ' < 'a\0', 'a ' > 'a\0';
+select 'a  a' > 'a', 'a  \0' < 'a';
+select binary 'a  a' > 'a', binary 'a  \0' > 'a', binary 'a\0' > 'a';
+
+#
+# Test MyISAM tables.
+#
+
+create table t1 (text1 varchar(32) not NULL, KEY key1 (text1));
+insert into t1 values ('teststring'), ('nothing'), ('teststring\t');
+check table t1;
+select * from t1 ignore key (key1) where text1='teststring' or text1 like 'teststring_%';
+select * from t1 where text1='teststring' or text1 like 'teststring_%';
+select * from t1 where text1='teststring' or text1 > 'teststring\t';
+select * from t1 order by text1;
+explain select * from t1 order by text1;
+
+alter table t1 modify text1 char(32) binary not null;
+check table t1;
+select * from t1 ignore key (key1) where text1='teststring' or text1 like 'teststring_%';
+select * from t1 where text1='teststring' or text1 like 'teststring_%';
+select * from t1 where text1='teststring' or text1 > 'teststring\t';
+select text1, length(text1) from t1 order by text1;
+select text1, length(text1) from t1 order by binary text1;
+
+alter table t1 modify text1 blob not null, drop key key1, add key key1 (text1(20));
+insert into t1 values ('teststring ');
+select concat('|', text1, '|') from t1 order by text1;
+
+alter table t1 modify text1 text not null, pack_keys=1;
+select * from t1 where text1 like 'teststring_%';
+select * from t1 where text1='teststring' or text1 like 'teststring_%';
+select * from t1 where text1='teststring' or text1 > 'teststring\t';
+select concat('|', text1, '|') from t1 order by text1;
+drop table t1;
+
+create table t1 (text1 varchar(32) not NULL, KEY key1 (text1)) pack_keys=0;
+insert into t1 values ('teststring'), ('nothing'), ('teststring\t');
+select * from t1 where text1='teststring' or text1 like 'teststring_%';
+select * from t1 where text1='teststring' or text1 >= 'teststring\t';
+drop table t1;
+
+# Test HEAP tables (with BTREE keys)
+
+create table t1 (text1 varchar(32) not NULL, KEY key1 using BTREE (text1)) engine=heap;
+insert into t1 values ('teststring'), ('nothing'), ('teststring\t');
+select * from t1 ignore key (key1) where text1='teststring' or text1 like 'teststring_%';
+select * from t1 where text1='teststring' or text1 like 'teststring_%';
+select * from t1 where text1='teststring' or text1 >= 'teststring\t';
+select * from t1 order by text1;
+explain select * from t1 order by text1;
+
+alter table t1 modify text1 char(32) binary not null;
+select * from t1 order by text1;
+drop table t1;
+
+#
+# Test InnoDB tables
+#
+
+create table t1 (text1 varchar(32) not NULL, KEY key1 (text1)) engine=innodb;
+insert into t1 values ('teststring'), ('nothing'), ('teststring\t');
+check table t1;
+select * from t1 where text1='teststring' or text1 like 'teststring_%';
+select * from t1 where text1='teststring' or text1 > 'teststring\t';
+select * from t1 order by text1;
+explain select * from t1 order by text1;
+
+alter table t1 modify text1 char(32) binary not null;
+select * from t1 order by text1;
+
+alter table t1 modify text1 blob not null, drop key key1, add key key1 (text1(20));
+insert into t1 values ('teststring ');
+select concat('|', text1, '|') from t1 order by text1;
+
+alter table t1 modify text1 text not null, pack_keys=1;
+select * from t1 where text1 like 'teststring_%';
+
+# The following gives wrong result in InnoDB
+select text1, length(text1) from t1 where text1='teststring' or text1 like 'teststring_%';
+select text1, length(text1) from t1 where text1='teststring' or text1 >= 'teststring\t';
+select concat('|', text1, '|') from t1 order by text1;
+drop table t1;