text: create database work_node default charset utf8mb4;
  
  DROP TABLE IF EXISTS WORKER_NODE;
  CREATE TABLE WORKER_NODE
  (
  ID BIGINT NOT NULL AUTO_INCREMENT COMMENT 'auto increment id',
  HOST_NAME VARCHAR(64) NOT NULL COMMENT 'host name',
  PORT VARCHAR(64) NOT NULL COMMENT 'port',
  TYPE INT NOT NULL COMMENT 'node type: ACTUAL or CONTAINER',
  LAUNCH_DATE DATE NOT NULL COMMENT 'launch date',
  MODIFIED TIMESTAMP null COMMENT 'modified time',
  CREATED TIMESTAMP null COMMENT 'created time',
  PRIMARY KEY(ID)
  )
  COMMENT='DB WorkerID Assigner for UID Generator',ENGINE = INNODB;