READ-COMMITTED没有区间锁

CREATE TABLE `test_mysql` (
  `id` bigint(20) NOT NULL COMMENT '主键',
 
  `events_id` varchar(32) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '活动ID',
 
  PRIMARY KEY (`id`) 
) ENGINE=InnoDB ;

mysql> select @@tx_isolation;
+----------------+
| @@tx_isolation |
+----------------+
| READ-COMMITTED |
+----------------+
1 row in set (0.00 sec)

mysql> show variables like '%tx_isolation%';
+---------------+----------------+
| Variable_name | Value          |
+---------------+----------------+
| tx_isolation  | READ-COMMITTED |
+---------------+----------------+
1 row in set (0.00 sec)

开启事务[1]:

START TRANSACTION ;

mysql> START TRANSACTION ;
Query OK, 0 rows affected (0.00 sec)