Г
MariaDB [(none)]> SELECT @@global.tx_isolation;
+-----------------------+
| @@global.tx_isolation |
+-----------------------+
| REPEATABLE-READ |
+-----------------------+
1 row in set (0.000 sec)
MariaDB [(none)]> SET GLOBAL TRANSACTION ISOLATION LEVEL READ COMMITTED;
Query OK, 0 rows affected (0.000 sec)
MariaDB [(none)]> SELECT @@global.tx_isolation;
+-----------------------+
| @@global.tx_isolation |
+-----------------------+
| READ-COMMITTED |
+-----------------------+
1 row in set (0.000 sec)