你如何在MySQL select语句中编写条件？

Question

我正在使用MySQL,我想在我的SQL中做一些三元语句,如:

SELECT USER_ID, ((USER_ID = 1) ? 1 : 0) AS FIRST_USER
  FROM USER

结果类似于:

USER_ID | FIRST_USER
1       | 1
2       | 0
3       | 0
etc.

如何实现这一目标？

Answer 1

SELECT USER_ID, (CASE USER_ID WHEN 1 THEN 1 ELSE 0 END) as FIRST_USER FROM USER

Answer 2

SELECT USER_ID, IF(USER_ID = 1, 1, 0) AS FIRST_USER FROM USER

该IF()语句的工作方式类似于三元？:运营商.