Question

我有两个表，Customers和ListTypeData。我只想加入这两个表。我在CityId表中有DistrictId和Customers。

City和District的修复方法相同 City和District。

  SELECT c.[CustomerId]
        ,c.[Name]
        ,c.[CompanyName]
        ,c.[ShopNo]
        ,list.[Description] AS 'City'
        ,list.[Description] AS 'District' 
  FROM [MakkiRuskFaisalabad].[dbo].[Customers] c
  JOIN [dbo].[ListTypesData] list ON c.CityId = list.ListTypeDataId ]

Answer 1

您需要第二次join到ListTypesData表：

SELECT c.CustomerId
  ,c.Name
  ,c.CompanyName
  ,c.ShopNo
  ,list.Description AS 'City'
  ,list2.Description AS 'District' 
FROM MakkiRuskFaisalabad.dbo.Customers c
    JOIN dbo.ListTypesData list ON c.CityId = list.ListTypeDataId
    JOIN dbo.ListTypesData list2 ON c.DistrictId = list2.ListTypeDataId

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