如何将MySQL日期（时间戳）字段默认为现在

Question

我尝试过

alter table t_granja ALTER COLUMN purchase_date TIMESTAMP DEFAULT now();

但我遇到了错误

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'TIMESTAMP DEFAULT now()' at line 1

Answer 1

使用CURRENT_TIMESTAMP

ALTER TABLE t_granja 
ALTER COLUMN purchase_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP;