text: -- MySQL init table SQL
  
  CREATE TABLE IF NOT EXISTS saga_snapshot(
   id BIGINT AUTO_INCREMENT PRIMARY KEY,
   transaction_id VARCHAR(255) null,
   snapshot_id int null,
   revert_context VARCHAR(255) null,
   transaction_context VARCHAR(255) null,
   create_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
   INDEX transaction_snapshot_index(transaction_id, snapshot_id)
  )ENGINE=InnoDB DEFAULT CHARSET=utf8;
  
  CREATE TABLE IF NOT EXISTS saga_event(
   id BIGINT AUTO_INCREMENT PRIMARY KEY,
   saga_id VARCHAR(255) null,
   type VARCHAR(255) null,
   content_json TEXT null,
   create_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
   INDEX saga_id_index(saga_id)
  )ENGINE=InnoDB DEFAULT CHARSET=utf8
  