text: CREATE TABLE IF NOT EXISTS `meta_snapshot`
  (
      `id` bigint
  (
      20
  ) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键',
      `gmt_create` datetime NOT NULL COMMENT '创建时间',
      `gmt_modified` datetime NOT NULL COMMENT '修改时间',
      `destination` varchar
  (
      128
  ) DEFAULT NULL COMMENT '通道名称',
      `binlog_file` varchar
  (
      64
  ) DEFAULT NULL COMMENT 'binlog文件名',
      `binlog_offest` bigint
  (
      20
  ) DEFAULT NULL COMMENT 'binlog偏移量',
      `binlog_master_id` varchar
  (
      64
  ) DEFAULT NULL COMMENT 'binlog节点id',
      `binlog_timestamp` bigint
  (
      20
  ) DEFAULT NULL COMMENT 'binlog应用的时间戳',
      `data` longtext DEFAULT NULL COMMENT '表结构数据',
      `extra` text DEFAULT NULL COMMENT '额外的扩展信息',
      PRIMARY KEY
  (
      `id`
  ),
      UNIQUE KEY binlog_file_offest
  (
      `destination`,
      `binlog_master_id`,
      `binlog_file`,
      `binlog_offest`
  ),
      KEY `destination`
  (
      `destination`
  ),
      KEY `destination_timestamp`
  (
      `destination`,
      `binlog_timestamp`
  ),
      KEY `gmt_modified`
  (
      `gmt_modified`
  )
      ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COMMENT='表结构记录表快照表';
  
  CREATE TABLE IF NOT EXISTS `meta_history`
  (
      `id` bigint
  (
      20
  ) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键',
      `gmt_create` datetime NOT NULL COMMENT '创建时间',
      `gmt_modified` datetime NOT NULL COMMENT '修改时间',
      `destination` varchar
  (
      128
  ) DEFAULT NULL COMMENT '通道名称',
      `binlog_file` varchar
  (
      64
  ) DEFAULT NULL COMMENT 'binlog文件名',
      `binlog_offest` bigint
  (
      20
  ) DEFAULT NULL COMMENT 'binlog偏移量',
      `binlog_master_id` varchar
  (
      64
  ) DEFAULT NULL COMMENT 'binlog节点id',
      `binlog_timestamp` bigint
  (
      20
  ) DEFAULT NULL COMMENT 'binlog应用的时间戳',
      `use_schema` varchar
  (
      1024
  ) DEFAULT NULL COMMENT '执行sql时对应的schema',
      `sql_schema` varchar
  (
      1024
  ) DEFAULT NULL COMMENT '对应的schema',
      `sql_table` varchar
  (
      1024
  ) DEFAULT NULL COMMENT '对应的table',
      `sql_text` longtext DEFAULT NULL COMMENT '执行的sql',
      `sql_type` varchar
  (
      256
  ) DEFAULT NULL COMMENT 'sql类型',
      `extra` text DEFAULT NULL COMMENT '额外的扩展信息',
      PRIMARY KEY
  (
      `id`
  ),
      UNIQUE KEY binlog_file_offest
  (
      `destination`,
      `binlog_master_id`,
      `binlog_file`,
      `binlog_offest`
  ),
      KEY `destination`
  (
      `destination`
  ),
      KEY `destination_timestamp`
  (
      `destination`,
      `binlog_timestamp`
  ),
      KEY `gmt_modified`
  (
      `gmt_modified`
  )
      ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COMMENT='表结构变化明细表';