mysql5.7 timestamp错误：there can be only oneTIMESTAMP column with CURRENT_TIMESTAMP in DEFAULT or ON UPDATE

#1293 - Incorrect table definition; there can be only oneTIMESTAMP column with CURRENT_TIMESTAMP in DEFAULT or ON UPDATE clause

1 CREATE TABLE `t_customer` (
     `q_id` INT(11) NOT NULL AUTO_INCREMENT,

     `c_ctime` TIMESTAMP NULL DEFAULT CURRENT_TIMESTAMP ,
     `c_uptime` TIMESTAMP NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,

改成

     `c_ctime` TIMESTAMP NULL DEFAULT CURRENT_TIMESTAMP,
     `c_uptime` DATETIME NOT NULL,

然后加上触发器

CREATE TRIGGER `t_customer_uptime` BEFORE UPDATE ON `t_customer` FOR EACHROW SET NEW.`c_uptime` = NOW()

 CREATE TABLE `tb1` (
   `id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
   `created` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
   `lastUpdated` DATETIME NOT NULL,
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB;
 DROP TRIGGER IF EXISTS `insert_example_trigger`;
 DROP TRIGGER IF EXISTS `update_example_trigger`;
 DELIMITER //
 CREATE TRIGGER `insert_example_trigger` BEFORE INSERT ON `tb1`
 FOR EACH ROW SET NEW.`lastUpdated` = NOW()
 //
 CREATE TRIGGER `update_example_trigger` BEFORE UPDATE ON `tb1`
 FOR EACH ROW SET NEW.`lastUpdated` = NOW()
 //
 DELIMITER ;