在表格中查找所有具有电话号码的客户

Question

实施例： 假设我有表customerphonedetails（customer_no，phone_no）。

data is like this :
customer_no =2 Phone_no=11
customer_no =2 Phone_no=12
customer_no =2 Phone_no=13
customer_no =1 Phone_no=11
customer_no =1 Phone_no=12
customer_no =1 Phone_no=13
customer_no =3 Phone_no=22

现在我想写一个查询，找到customer_no 全部 phone_no=(11,12,13)。

预期结果是：Customer_no =（1,2）。

Answer 1

您可以使用Phone_no条款检查where中为customer_no提供的所有三个having是否存在：

select customer_no
from customerphonedetails
where Phone_no in (11, 12, 13)
group by customer_no
having count(distinct Phone_no) = 3

Answer 2

select DISTINCT customer_no
from table
where phone_no in(11,12,13)

应删除重复记录。

Answer 3

这是执行此操作的另一种方法：

select distinct yes.customer_no
from 
(select  customer_no, count(*) over (partition by customer_no) as how_many_do_you_have
from marcin.marcin) as yes
where yes.how_many_do_you_have = (select count(distinct Phone_no) from marcin.marcin)