Question

我想从其他表中插入字段max id，但我需要将其与文本信息连接为“已创建新用户id =”MAX（my_employee.id）。有效的代码，但只插入id：

INSERT INTO my_logs (user_id, type, date) 
        SELECT '1', MAX(my_employee.id), '2013-05-28 23:52:07' FROM my_employee

我试过了：

INSERT INTO my_logs (user_id, type, date) 
          SELECT '1',"Created new user with id =" MAX(my_employee.id), 
                              '2013-05-28 23:52:07' FROM my_employee

和类似但似乎没有任何作用

Answer 1

这应该适合你：

insert into my_logs  
select 1, concat('Created new user with id = ', MAX(id)), '2013-05-28 23:52:07' 
from my_employee

SQL Fiddle Demo

Answer 2

你想这样做吗？

INSERT INTO my_logs (user_id, type, date) 
      SELECT '1', concat('Created new user with id =', MAX(my_employee.id)), 
             '2013-05-28 23:52:07'
      FROM my_employee;

INSERT SELECT MAX与文本连接

2 个答案: