mirror of
https://github.com/MariaDB/server.git
synced 2025-01-16 20:12:31 +01:00
47 lines
1.3 KiB
Text
47 lines
1.3 KiB
Text
drop table if exists t1;
|
|
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;
|
|
length(data)
|
|
18874368
|
|
delete from t1 where left(data,1)='a';
|
|
check table t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 check status OK
|
|
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;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 check status OK
|
|
UPDATE t1 set data=repeat('c',17*1024*1024);
|
|
check table t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 check status OK
|
|
delete from t1 where left(data,1)='c';
|
|
check table t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 check status OK
|
|
INSERT INTO t1 set data=repeat('a',18*1024*1024);
|
|
select length(data) from t1;
|
|
length(data)
|
|
18874368
|
|
SET STATEMENT sql_mode = 'NO_ENGINE_SUBSTITUTION' FOR
|
|
alter table t1 modify data blob;
|
|
Warnings:
|
|
Warning 1265 Data truncated for column 'data' at row 1
|
|
select length(data) from t1;
|
|
length(data)
|
|
65535
|
|
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);
|
|
Warnings:
|
|
Warning 1265 Data truncated for column 'data' at row 1
|
|
select length(data) from t1;
|
|
length(data)
|
|
65535
|
|
drop table t1;
|