public class TestMasterQuery {
  public static void main(String[] a) throws Exception {
    Class.forName("com.mysql.cj.jdbc.Driver");
    java.sql.Connection c = java.sql.DriverManager.getConnection(
      "jdbc:mysql://cq-cdb-8fjmemkb.sql.tencentcdb.com:27220/ylrz_saas?allowMultiQueries=true","root","Ylrz_1q2w3e4r5t6y");
    java.sql.PreparedStatement ps = c.prepareStatement(
      "select id, company_id, visible_company_ids, template_code from company_workflow_lobster where del_flag = 0 and ( company_id = ? or ( visible_company_ids is not null and visible_company_ids != '' and find_in_set(?, visible_company_ids) ) ) and (template_kind is null or template_kind = '' or template_kind = 'MASTER') order by create_time desc limit 1");
    ps.setLong(1,1); ps.setLong(2,1);
    java.sql.ResultSet r = ps.executeQuery();
    System.out.println(r.next() ? "master query OK id="+r.getLong(1) : "master query OK empty");
    c.close();
  }
}