Mysql 关闭自动提交

回话级关闭自动提交
mysql> set autocommit=off;
Query OK, 0 rows affected (0.00 sec)

mysql>  show variables like 'autocommit';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| autocommit    | OFF   |
+---------------+-------+
1 row in set (0.00 sec)



回话1:
mysql> desc t1
    -> ;
+-------+---------+------+-----+---------+-------+
| Field | Type    | Null | Key | Default | Extra |
+-------+---------+------+-----+---------+-------+
| id    | int(11) | YES  |     | NULL    |       |
+-------+---------+------+-----+---------+-------+
1 row in set (0.00 sec)

mysql> select * from t1;
+------+
| id   |
+------+
|    1 |
+------+
1 row in set (0.00 sec)

mysql> insert into t1 values(2);
Query OK, 1 row affected (0.01 sec)

mysql> select * from t1;
+------+
| id   |
+------+
|    1 |
|    2 |
+------+
2 rows in set (0.00 sec)


回话2：
mysql> select * from t1;
+------+
| id   |
+------+
|    1 |
+------+
1 row in set (0.00 sec)

可以看到此时关闭自动提交已经生效
mysql> select * from t1;
+------+
| id   |
+------+
|    1 |
|    2 |
+------+
2 rows in set (0.00 sec)

mysql> rollback;
Query OK, 0 rows affected (0.06 sec)

mysql>  select * from t1;
+------+
| id   |
+------+
|    1 |
+------+
1 row in set (0.00 sec)