Question

我正在努力解决一个大问题并且无法看到它是如何完成的...所以任何帮助都会得到你们的赞赏SQL大师！

我现在拥有的是这样一张桌子：

Sticker Price   Cash Price      Credit Price    Value
Yes             Yes             NULL            107
NULL            Yes             NULL            115
Yes             Yes             NULL            127

我需要做的是构建一个表（翻转）来显示：

Text            Value   IsDefault
Sticker Price   Sticker 1
Cash Price      Cash    0

并且不显示Credit Price，因为第一个表中的所有值都为NULL。

基本上我想只显示贴纸，如果它不是全部为NULL，如果它不是全部为现金，等等......

我想到了枢轴，但只是无法绕过它！

目前我有这个给出顶级表格：

SELECT SH1.[Sticker Price], SH1.[Credit Price], SH1.[Cash Price], SH1.[Credit Price], UG.Description as Value,
    CASE ROW_NUMBER() OVER(ORDER BY UG.Description)
    WHEN 1 THEN 1 ELSE 0 END as ISDEFAULT
FROM [uStore].[dbo].[ACL_UserGroup] UG
    INNER JOIN [uStore].[dbo].[ACL_UserGroupMembership] UGM ON UG.UserGroupId = UGM.UserGroupId
    INNER JOIN [XMPDBHDS].[XMPieHDSSchema60].[Sheet1] SH1 ON CONVERT(nvarchar(100), SH1.[Centre Code]) = UG.Description
WHERE UGM.UserId = 1012

我只是看不出如何通过我有限的SQL知识得到我想要的表...

Answer 1

在这种情况下，您应该执行LEFT JOIN而不是

SELECT SH1.[Sticker Price], SH1.[Credit Price], 
SH1.[Cash Price], 
SH1.[Credit Price], 
UG.Description as Value, 
CASE ROW_NUMBER() OVER(ORDER BY UG.Description) WHEN 1 THEN 1 ELSE 0 
END as ISDEFAULT

FROM [uStore].[dbo].[ACL_UserGroup] UG

LEFT JOIN [uStore].[dbo].[ACL_UserGroupMembership] UGM 
ON UG.UserGroupId = UGM.UserGroupId

LEFT JOIN [XMPDBHDS].[XMPieHDSSchema60].[Sheet1] SH1 
ON CONVERT(nvarchar(100), SH1.[Centre Code]) = UG.Description

WHERE UGM.UserId = 1012
AND SH1.[Credit Price] IS NOT NULL
AND UGM.UserGroupId IS NOT NULL;

Answer 2

最后，我使用了幸运枢纽：

SELECT DISTINCT [Text], SUBSTRING([Text], 1, CHARINDEX(' ', [Text])) as Value, 
CASE ROW_NUMBER() OVER(ORDER BY [Text])
    WHEN 1 THEN 1 ELSE 0 END as ISDEFAULT
FROM
( SELECT SH1.[Sticker Price], SH1.[Credit Price], SH1.[Cash Price], UG.Description
FROM [uStore].[dbo].[ACL_UserGroup] UG
    INNER JOIN [uStore].[dbo].[ACL_UserGroupMembership] UGM ON UG.UserGroupId = UGM.UserGroupId
    INNER JOIN [XMPDBHDS].[XMPieHDSSchema60].[Sheet1] SH1 ON CONVERT(nvarchar(100), SH1.[Centre Code]) = UG.Description
WHERE UGM.UserId = @UserID) U
       UNPIVOT
   (Details FOR [Text] IN ([Sticker Price], [Credit Price], [Cash Price] )
)AS unpvt group by [Text]

结果!!!

SQL仅在非null时才翻转和获取行

2 个答案: