mysql - 选择查询（一张表）

Question

我的数据库中有 Pruza 表，该表中的情况例如：

SifVU     Name
1         Test1
2         Test2
1         Test3
2         Test3

如何进行仅返回 Test3 作为结果的 Select 查询，因为只有 Test3 同时具有 Sif（1 和 2）。

Answer 1

试试这个，它只显示具有 SifVU 1 和 2 的名称：

select one.name
from (select name from Pruza where SifVU = 1) one
join (select name from Pruza where SifVU = 2) two
on (one.name = two.name)

Answer 2

SELECT Name
FROM Pruza
WHERE SifVU in (1,2)
GROUP BY Name
HAVING COUNT(DISTINCT SifVU) = 2

见小提琴。

Answer 3

这可用于任意数量的 TEST3 类型的记录，无需任何硬编码

SELECT B.NAME
FROM
(SELECT COUNT(SifVU) AS CNT_SifVU FROM TABLE GROUP BY SifVU) AS A
INNER JOIN 
(
SELECT COUNT(*) AS DISTINCT_SIFVU, NAME
FROM
(SELECT DISTINCT SifVU, Name FROM TABLE) AS B
) AS C
ON B.DISTINCT_SIFVU = A.CNT_SifVU