Question

表1列是：

======================
A        B
======================
100      4
-----------
101      2
101      3
101      4
-----------
102      6
----------- 
103      7
-----------
104      2
104      3
104      4
-----------
105      2
-----------
106      4
-----------
107      3
--------------------------------

现在我输入了B参数，如'6'或'2,3,4'。

我想得到这样的结果：

如果输入B参数为'6'，则输出应为：

======================
A        B
======================
102      6

如果输入B参数为'2,3,4'，则输出应为：

======================
A        B
======================
101      2
101      3
101      4
-----------
104      2
104      3
104      4

Answer 1

只需选择所需的列：

SELECT A, B
FROM Table_1
WHERE B IN (2,3,4)

编辑：如果只有所有参数存在时才需要它们

    SELECT A, B
    FROM Table_1
    WHERE A IN (SELECT A FROM Table_1 WHERE B = 2) AND A IN (SELECT A FROM Table_1 WHERE B = 3) AND A IN (SELECT A FROM Table_1 WHERE B = 4)

Answer 2

根据您的具体要求，您可以尝试这个 -

- =之后的最后一位数，即3应该被检查的输入数量替换为我们的情况，它是3（2,3,4）

SELECT A,B FROM Table_1 AS tbl1 WHERE B IN (2,3,4) AND (select COUNT(1) FROM Table_1 AS tbl2 WHERE B IN (2,3,4) AND tbl1.A = tbl2.A)
 = 3

拜托，看看。

谢谢！

Answer 3

SELECT A
    ,B
FROM table_1
WHERE A IN (
        SELECT A
        FROM table_1
        WHERE B = 2
        )
    AND A IN (
        SELECT A
        FROM table_1
        WHERE B = 3
        )

比较SQL Server中列的值

3 个答案: