从 2 个不同的表中查找计数

Finding the count from 2 different tables

我有 3 个表 - 2 个输入表和 1 个查找表

Tab1
Id 
4
4
5
6
8
2

Tab2
ID
4
4
1
1
2
6

tab3
ID   Name
1    One
2    two
3    three
4    four
5    five
6    six
7    seven
8    eight

我需要一个查询来帮助我获得

Count Name
1     One
1     two
0     three
1     four
1     five
1     six
0     seven
1     eigh

我已经尝试了 In 等,但我无法得到结果。此外,完全连接对 ID 计数两次而不是一次。

SELECT 
   COUNT(DISTINCT a.id) + COUNT(DISTINCT b.id) AS Total, 
   c.id 
FROM c 
INNER JOIN a ON a.id= b.id 
LEFT OUTER JOIN b ON c.id = b.id 
GROUP BY c.id

我试过了,但没有得到想要的结果。

如果我正确理解了这个问题,一个可能的解决方案是使用 UNION(从输入 tables 中排除重复项)和适当的 JOIN 使用查找 table:

表格:

SELECT Id INTO Tbl1
FROM (VALUES (4), (4), (5), (6), (8), (2)) v (Id)

SELECT Id INTO Tbl2
FROM (VALUES (4), (4), (1), (1), (2), (6)) v (Id)

SELECT Id, Name
INTO tbl3
FROM (VALUES
   (1, 'One'), (2, 'two'), (3, 'three'), (4, 'four'), (5, 'five'), (6, 'six'), (7, 'seven'), (8, 'eight')
) v (Id, Name)

声明:

SELECT t.Name, Count = COUNT(j.Id)
FROM tbl3 t
FULL JOIN (
   SELECT Id FROM tbl1
   UNION
   SELECT Id FROM tbl2
) j ON t.Id = j.Id
GROUP BY t.Name