Commit 8ba02d72 authored by unknown's avatar unknown
Browse files

Added a test case for Bug#18038 MySQL server corrupts binary columns data

parent d4df3f23

mysql-test/r/alter_table.result

+20 −0
Original line number Diff line number Diff line
@@ -621,3 +621,23 @@ create table t1 (t varchar(255) default null, key t (t(80))) 
engine=myisam default charset=latin1;

alter table t1 change t t text;

drop table t1;

CREATE TABLE t1 (s CHAR(8) BINARY);

INSERT INTO t1 VALUES ('test');

SELECT LENGTH(s) FROM t1;

LENGTH(s)

4

ALTER TABLE t1 MODIFY s CHAR(10) BINARY;

SELECT LENGTH(s) FROM t1;

LENGTH(s)

4

DROP TABLE t1;

CREATE TABLE t1 (s BINARY(8));

INSERT INTO t1 VALUES ('test');

SELECT LENGTH(s) FROM t1;

LENGTH(s)

8

ALTER TABLE t1 MODIFY s BINARY(10);

SELECT LENGTH(s) FROM t1;

LENGTH(s)

10

DROP TABLE t1;

mysql-test/t/alter_table.test

+18 −0
Original line number Diff line number Diff line
@@ -449,3 +449,21 @@ create table t1 (t varchar(255) default null, key t (t(80))) 
engine=myisam default charset=latin1;

alter table t1 change t t text;

drop table t1;



#

# Bug#18038  MySQL server corrupts binary columns data

#



CREATE TABLE t1 (s CHAR(8) BINARY);

INSERT INTO t1 VALUES ('test');

SELECT LENGTH(s) FROM t1;

ALTER TABLE t1 MODIFY s CHAR(10) BINARY;

SELECT LENGTH(s) FROM t1;

DROP TABLE t1;



CREATE TABLE t1 (s BINARY(8));

INSERT INTO t1 VALUES ('test');

SELECT LENGTH(s) FROM t1;

ALTER TABLE t1 MODIFY s BINARY(10);

SELECT LENGTH(s) FROM t1;

DROP TABLE t1;