吨-SQL SELECT查询过滤器

Question

：

Id RelatedId 
-------------- 
1 1 
1 2 
1 3 
2 2 
2 3 
2 4 
3 5 

输入是@input_1 = 2 and @input_2 = 3（输入计数可以变化）

我想选择只从具有上表中这些ID这两个输入都在它们对应的RelatedIds中。

因此，基于该给予输入，输出将是

Id 
--- 
1 
2 

感谢。

Answer 1

尝试

select id 
from YourTable 
where relatedid in (@input_1, @input_2) 
group by id 
having count(*) >=2 -- for 3 inputs, make this 3 etc 

例如，你可以运行

create table #yourtable(Id int, RelatedId int) 

insert #yourtable values(1,1) 
insert #yourtable values(1,2) 
insert #yourtable values(1,3) 
insert #yourtable values(2,2) 
insert #yourtable values(2,3) 
insert #yourtable values(2,4) 
insert #yourtable values(3,5) 


declare @input_1 int, @input_2 int 
select @input_1 = 2,@input_2 = 3 

select id 
from #yourtable 
where relatedid in (@input_1, @input_2) 
group by id 
having count(*) >=2 

Answer 2

试试这个：

SELECT Id FROM tableName 
INNER JOIN (SELECT @input_1 AS id 
    UNION SELECT @input_2, 
    UNION SELECT @input_3) inputs 
ON inputs.id = tableName.Id 

Source

或者：

BEGIN 
    DECLARE @inputs TABLE(id tinyint) 
    INSERT INTO @inputs SELECT @input_1 
    INSERT INTO @inputs SELECT @input_2 
    INSERT INTO @inputs SELECT @input_3 

    SELECT * FROM tableName 
    INNER JOIN @inputs i ON i.id = tableName.Id 
END