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Diffstat (limited to 'mysql-test/main/myisam-blob.test')
-rw-r--r-- | mysql-test/main/myisam-blob.test | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/mysql-test/main/myisam-blob.test b/mysql-test/main/myisam-blob.test new file mode 100644 index 00000000..23de8d54 --- /dev/null +++ b/mysql-test/main/myisam-blob.test @@ -0,0 +1,44 @@ +# +# 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; +SET STATEMENT sql_mode = 'NO_ENGINE_SUBSTITUTION' FOR +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; + +# End of 4.1 tests |