Question

我想检查两个或更多特定值，如firstname和lastname是否在我的数据库中。

Select * from client_info 
where (first_name = "John" and last_name ="Smith")
and   (first_name = "Donald" and last_name ="Trump")
and   (first_name = "Baracj" and last_name ="Obama")

提前致谢

Answer 1

你可以试试这个：

Select * from client_info 
      where (first_name = "John" and last_name ="Smith")
           or (first_name = "Donald" and last_name ="Trump")
           or (first_name = "Baracj" and last_name ="Obama")

Answer 2

执行此查询，如果结果为＆gt; = 2，那么表中有两行

SELECT COUNT(*) FROM (SELECT DISTINCT first_name, last_name FROM client_info
                      WHERE (first_name = "John" AND last_name ="Smith")
                         OR (first_name = "Donald" AND last_name ="Trump")
                         OR (first_name = "Baracj" AND last_name ="Obama")) AS ci

如何在两列中查询多个值

2 个答案: