Question

我有两个表连接以显示第一个表的计数值，我写了一个像这样的查询

我有一个表格，其中包含名为[PEBPC]的类别，其中包含3个生产者类别

USE [P1OTP]

 SELECT pe.[ID] AS [No]
        ,pe.[NAME] AS [ProducerType]
           ,coalesce(COUNT(CASE tp.[NewProducer] WHEN 0 THEN 1 ELSE NULL END),0) AS [NewProducers]
           ,coalesce(COUNT(CASE tp.[NewProducer] WHEN 1 THEN 1 ELSE NULL END),0) AS [ExistProducer]
           ,coalesce(COUNT(tp.[NewProducer]),0) AS [Total]
  FROM [TPDCS] 
 LEFT  JOIN [PEBPC] pe ON pe.[ID] = tp.[estbProducerID]
 WHERE 1 = 1
     AND tp.[OrganizationAddrProvince] IS NOT NULL
     AND tp.[OrganizationAddrProvince] = '81'
     AND tp.[libDocumentID] IN(SELECT [ParentID] FROM [TPDTS] WHERE [CategoryID] IS NOT NULL) >
     GROUP BY pe.[ID] 
        ,pe.[NAME]   ORDER BY pe.[ID]

当这个查询运行时，它只显示2个类别，因为这个省只有1个和2个类别

    No  Type of Producer    NewProducer   ExistProducer    Total

    1   Citizen Producer    102            0                102
    2   sole proprietorship  45            0                45

我尝试了合并，计数或可以返回0的东西，但它不起作用

我需要他们像这样返回

    No  Type of Producer    NewProducer   ExistProducer    Total

    1   Citizen Producer    102            0                102
    2   sole proprietorship  45            0                45
    3   SME Producer          0            0                  0

Answer 1

这个怎么样？使用PEBPC作为主表，然后将其加入TPDCS。请注意，我在JOIN部分中移动了所有WHERE条件：

SELECT 
    pe.[ID] AS [No]
    ,pe.[NAME] AS [ProducerType]
    ,COALESCE(COUNT(CASE tp.[NewProducer] WHEN 0 THEN 1 ELSE NULL END),0) AS [NewProducers]
    ,COALESCE(COUNT(CASE tp.[NewProducer] WHEN 1 THEN 1 ELSE NULL END),0) AS [ExistProducer]
    ,COALESCE(COUNT(tp.[NewProducer]),0) AS [Total]
FROM [PEBPC] pe
    LEFT  JOIN [TPDCS] tp ON pe.[ID] = tp.[estbProducerID]
    AND tp.[OrganizationAddrProvince] IS NOT NULL
    AND tp.[OrganizationAddrProvince] = '81'
    AND tp.[libDocumentID] IN(SELECT [ParentID] FROM [TPDTS] WHERE [CategoryID] IS NOT NULL)
GROUP BY pe.[ID], pe.[NAME]
ORDER BY pe.[ID]

查询结果不返回行中的值

1 个答案: