开始建了一张表:
create table t (a int not null primary key, b varchar(8000))
insert into t select 1,repeat('a',7000)什么意思啊?
create table t (a int not null primary key, b varchar(8000))
insert into t select 1,repeat('a',7000)什么意思啊?
+---------------+
| repeat('a',3) |
+---------------+
| aaa |
+---------------+
1 row in set (0.00 sec)