Question

我有这个问题：

SELECT c.Show_Code, req.Statut_ID, COUNT(req.Statut_ID) 'Count'
FROM [Case] c
JOIN Request req ON req.Case_Number = c.Number
GROUP BY c.Show_Code, req.Statut_ID

结果是：

Show_Code   Statut_ID   Count
564900          2         1
568127          2         1

我有这个法定表（Ref_RequestStatut）

ID   Name
1    Test
2    Test2

我怎样才能得到这个结果：

Show_Code   Statut_ID   Count
564900          1         0
564900          2         1
568127          1         0
568127          2         1

我想要所有的法规，即使那些没有价值的法律？

感谢

Answer 1

如果您使用的是SQL Server 2005或更高版本：

WITH counted AS (
  SELECT c.Show_Code, req.Statut_ID, COUNT(req.Statut_ID) 'Count'
  FROM [Case] c
  JOIN Request req ON req.Case_Number = c.Number
  GROUP BY c.Show_Code, req.Statut_ID
),
showcodes AS (
  SELECT DISTINCT Show_Code
  FROM counted
)
SELECT
  s.Show_Code,
  r.ID AS Statut_ID,
  Count = ISNULL(c.Count, 0)
FROM showcodes s
  CROSS JOIN Ref_RequestStatut r
  LEFT JOIN counted c ON s.Show_Code = c.Show_Code AND r.ID = c.Statut_ID
ORDER BY 
  s.Show_Code,
  r.ID

加入2个表：一个数据表和一个statut表，得到没有entrie的statut

1 个答案: