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Current File : /www/server/mysql/mysql-test/t/myisam-blob.test
# This testcase throws following error when run with InnoDB as Default
# Unknown/unsupported storage engine: InnoDB
# All tests are required to run with MyISAM
# MTR starts mysqld with MyISAM as default

--source include/force_myisam_default.inc
--source include/have_myisam.inc

SET SQL_MODE='';
#
# Test bugs in the MyISAM code with blobs
#

--disable_warnings
drop table if exists t1;
--enable_warnings

# Bug #2159 (Problem with update of blob to > 16M)

CREATE TABLE t1 (data LONGBLOB) ENGINE=myisam;
INSERT INTO t1 (data) VALUES (NULL);
UPDATE t1 set data=repeat('a',18*1024*1024);
select length(data) from t1;
delete from t1 where left(data,1)='a';
check table t1;
truncate table t1;
INSERT INTO t1 (data) VALUES (repeat('a',1*1024*1024));
INSERT INTO t1 (data) VALUES (repeat('b',16*1024*1024-1024));
delete from t1 where left(data,1)='b';
check table t1;

# now we have two blocks in the table, first is a 1M record and second is
# a 16M delete block.

UPDATE t1 set data=repeat('c',17*1024*1024);
check table t1;
delete from t1 where left(data,1)='c';
check table t1;

INSERT INTO t1 set data=repeat('a',18*1024*1024);
select length(data) from t1;
alter table t1 modify data blob;
select length(data) from t1;
drop table t1;

CREATE TABLE t1 (data BLOB) ENGINE=myisam;
INSERT INTO t1 (data) VALUES (NULL);
UPDATE IGNORE t1 set data=repeat('a',18*1024*1024);
select length(data) from t1;
drop table t1;

SET SQL_MODE=default;
# End of 4.1 tests

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