此问题基于我的Previous Question。 我需要扩展查询，以便我可以合并另外两个表（在另一个服务器实例上运行）。
在这个Fiddle中，我添加了这两个表：
CREATE TABLE LookUp
([docID] varchar(10), [docType] varchar(100), [PartNumber] varchar(100), [internalID] varchar(100));
INSERT INTO LookUp
([docID],[docType],[PartNumber], [internalID])
VALUES
('D0305415', 'docTypeSub', 'X0455', null),
('D0157632', 'docTypeMain', null, 'XY05570-XY05571'),
('D0181511', 'docTypeMain',null, 'XY05572-XY05573'),
('D0157633', 'docTypeMain', null, 'XY06380-XY06381'),
('D0156037', 'docTypeSub', 'X0326', null),
('D0151874', 'docTypeMain', null, 'XY05345');
CREATE TABLE Links
([docIDTop] varchar(10), [docIDBottom] varchar(10));
INSERT INTO Links
([docIDTop],[docIDBottom])
VALUES
('D0157632', 'D0305415'),
('D0181511', 'D0305415'),
('D0157633', 'D0305415'),
('D0151874', 'D0156037');
关于输出，我需要根据 PartNumber 列在逗号分隔列中显示新的 internalID 列。
这是输出正确数据的查询：
select c.docType AS c_docTypeSub, c.docID AS C_docID, c.PartNumber AS C_PartNumber ,
b.docIDTop AS B_docIdTop, b.docIDBottom AS B_docIdBottom, a.*
FROM LookUp a, Links b, LookUp c
WHERE a.docType = 'docTypeMain'
and a.docID = b.docIDTop and b.docIDBottom = c.docID
and c.docType = 'docTypeSub'
;
我的问题是将这些部分组合在一起，以便我可以在下面的旧查询中显示 InternalID ：
----------------
-- OLD Query --
----------------
WITH CTE_no_nums
AS
(
SELECT docID,
CASE
WHEN PATINDEX('%[0-9]%',column1) > 0
THEN SUBSTRING(column1,0,PATINDEX('%[0-9]%',column1))
ELSE column1
END AS cols,
COALESCE(column2,column3) AS vals
FROM miscValues
WHERE column2 IS NOT NULL
OR column3 IS NOT NULL
),
CTE_Pivot
AS
(
SELECT docID,partNumber,prio,[length],material
FROM CTE_no_nums
PIVOT
(
MAX(vals) FOR cols IN (partNumber,prio,[length],material)
) pvt
)
SELECT A.docId + ' # ' + B.vals AS [DocID # Plant],
A.docID,
A.partNumber,
A.prio,
B.vals AS Plant,
A.partNumber + '#' + A.material + '#' + A.[length] AS Identification,
A.[length],
SUBSTRING(CA.colors,0,LEN(CA.colors)) colors --substring removes last comma
FROM CTE_Pivot A
INNER JOIN CTE_no_nums B
ON A.docID = B.docID
AND B.cols = 'Plant'
CROSS APPLY ( SELECT vals + ','
FROM CTE_no_nums C
WHERE cols = 'Color'
AND C.docID = A.docID
FOR XML PATH('')
) CA(colors)
;
希望你能告诉我这是如何实现的。如果有什么不清楚的话随便问。不，我不负责数据结构： - ）
谢谢。
答案 0 :(得分：2)
胡安·鲁伊斯·德卡斯蒂利亚延长了我给出的答案，并睁开了我的眼睛，为你的＆＃34;链接＆＃34; -table。
这是我的最终建议，在另一个CTE中解决您的问题：
CREATE TABLE MiscValues
([docID] varchar(10) ,[rowNumber] int, [Column1] varchar(100), [Column2] varchar(100)
, [Column3] varchar(100))
;
INSERT INTO MiscValues
([docID],[rowNumber],[Column1], [Column2], [Column3])
VALUES
('D0001',1, 'PartNumber', 'X0455', NULL),
('D0001',2, 'Prio', '1', NULL),
('D0001',3, 'Plant1', NULL, NULL),
('D0001',4, 'Plant2', 'PlantB', NULL),
('D0001',5, 'Plant3', 'PlantC', NULL),
('D0001',6, 'Plant4', NULL, NULL),
('D0001',7, 'Color1', 'white', NULL),
('D0001',8, 'Color2', 'black', NULL),
('D0001',9, 'Color3', 'blue', NULL),
('D0001',10, 'Material', 'MA123', NULL),
('D0001',11, 'Length', NULL, '10.87'),
('D0002',1, 'PartNumber', 'X0326', NULL),
('D0002',2, 'Prio', '2', NULL),
('D0002',3, 'Plant1', 'PlantA', NULL),
('D0002',4, 'Plant2', NULL, NULL),
('D0002',5, 'Plant3', 'PlantC', NULL),
('D0002',6, 'Plant4', 'PlantD', NULL),
('D0002',7, 'Color1', NULL, NULL),
('D0002',8, 'Color2', 'black', NULL),
('D0002',9, 'Color3', NULL, NULL),
('D0002',10, 'Color4', 'yellow', NULL),
('D0002',11, 'Material', 'MA456', NULL),
('D0002',12, 'Length', NULL, '16.43')
;
CREATE TABLE LookUp([docID] varchar(10), [docType] varchar(100), [PartNumber] varchar(100), [internalID] varchar(100));
INSERT INTO LookUp([docID],[docType],[PartNumber], [internalID])
VALUES
('D0305415', 'docTypeSub', 'X0455', null),
('D0157632', 'docTypeMain', null, 'XY05570-XY05571'),
('D0181511', 'docTypeMain',null, 'XY05572-XY05573'),
('D0157633', 'docTypeMain', null, 'XY06380-XY06381'),
('D0156037', 'docTypeSub', 'X0326', null),
('D0151874', 'docTypeMain', null, 'XY05345');
CREATE TABLE Links ([docIDTop] varchar(10), [docIDBottom] varchar(10));
INSERT INTO Links ([docIDTop],[docIDBottom])
VALUES
('D0157632', 'D0305415'),
('D0181511', 'D0305415'),
('D0157633', 'D0305415'),
('D0151874', 'D0156037');
WITH CTE_no_nums
AS
(
SELECT docID,
CASE
WHEN PATINDEX('%[0-9]%',column1) > 0
THEN SUBSTRING(column1,0,PATINDEX('%[0-9]%',column1))
ELSE column1
END AS cols,
COALESCE(column2,column3) AS vals
FROM miscValues
WHERE column2 IS NOT NULL
OR column3 IS NOT NULL
),
CTE_Pivot
AS
(
SELECT docID,partNumber,prio,[length],material
FROM CTE_no_nums
PIVOT
(
MAX(vals) FOR cols IN (partNumber,prio,[length],material)
) pvt
),
CTE_InternalIDs AS
(
SELECT *
,STUFF
(
(SELECT ', ' + internalID
FROM LookUp AS L2
INNER JOIN Links L ON L2.docID=L.docIDTop
WHERE L2.internalID IS NOT NULL
AND L.docIDBottom=L1.docID
FOR XML PATH('')
),1,2,'') AS ConcatenatedInternalIDs
FROM LookUp AS L1
WHERE L1.internalID IS NULL
)
SELECT A.docId + ' # ' + B.vals AS [DocID # Plant],
A.docID,
A.partNumber,
A.prio,
B.vals AS Plant,
A.partNumber + '#' + A.material + '#' + A.[length] AS Identification,
A.[length],
SUBSTRING(CA.colors,0,LEN(CA.colors)) colors, --substring removes last comma
IIDs.ConcatenatedInternalIDs
FROM CTE_Pivot A
INNER JOIN CTE_no_nums B
ON A.docID = B.docID
AND B.cols = 'Plant'
INNER JOIN CTE_InternalIDs AS IIDs ON A.partNumber = IIDs.PartNumber
CROSS APPLY ( SELECT vals + ','
FROM CTE_no_nums C
WHERE cols = 'Color'
AND C.docID = A.docID
FOR XML PATH('')
) CA(colors)
;
--Clean up...
/*
DROP TABLE Links;
DROP TABLE LookUp;
DROP TABLE miscValues;
*/
以上回过头来说：
D0001 # PlantB D0001 X0455 1 PlantB X0455#MA123#10.87 10.87 white,black,blue XY05570-XY05571, XY05572-XY05573, XY06380-XY06381
D0001 # PlantC D0001 X0455 1 PlantC X0455#MA123#10.87 10.87 white,black,blue XY05570-XY05571, XY05572-XY05573, XY06380-XY06381
D0002 # PlantA D0002 X0326 2 PlantA X0326#MA456#16.43 16.43 black,yellow XY05345
D0002 # PlantC D0002 X0326 2 PlantC X0326#MA456#16.43 16.43 black,yellow XY05345
D0002 # PlantD D0002 X0326 2 PlantD X0326#MA456#16.43 16.43 black,yellow XY05345
我不完全确定，如果我理解正确的话...你想在查询中添加一个连接列表，所有的internalID条目都适合LookUp的PartNumber。
您遇到的问题：没有隐式排序顺序......
您插入
VALUES
('D0305415', 'docTypeSub', 'X0455', null),
('D0157632', 'docTypeMain', null, 'XY05570-XY05571'),
('D0181511', 'docTypeMain',null, 'XY05572-XY05573'),
('D0157633', 'docTypeMain', null, 'XY06380-XY06381'),
('D0156037', 'docTypeSub', 'X0326', null),
('D0151874', 'docTypeMain', null, 'XY05345');
似乎＆＃34; bind＆＃34;值＆＃34; XY05570-XY05571＆＃34;，＆＃34; XY05572-XY05573＆＃34;和＆＃34; XY06380-XY06381＆＃34;到PartNumber＆＃34; X0455＆＃34;和价值＆＃34; XY05345＆＃34;到PartNumber＆＃34; X0326＆＃34;。但这是错误的!!!
你可以这样做
VALUES
('D0305415', 'docTypeSub', 'X0455', null),
('D0157632', 'docTypeMain', 'X0455', 'XY05570-XY05571'),
('D0181511', 'docTypeMain','X0455', 'XY05572-XY05573'),
('D0157633', 'docTypeMain', 'X0455', 'XY06380-XY06381'),
('D0156037', 'docTypeSub', 'X0326', null),
('D0151874', 'docTypeMain', 'X0326', 'XY05345');
或者你可以添加一个IDENTITY列，并在那些具有internalID IS NULL的那些条目之间摆弄。
使用第一行（填充每行的PartNumber列），您可以获得如下的连接列表：
select c.docType AS c_docTypeSub, c.docID AS C_docID, c.PartNumber AS C_PartNumber ,
b.docIDTop AS B_docIdTop, b.docIDBottom AS B_docIdBottom, a.*,
STUFF((SELECT ', ' + x.internalID
FROM LookUp AS x
WHERE x.PartNumber=c.PartNumber
FOR XML PATH(''),TYPE).value('.','nvarchar(max)'),1,2,'') AS ConcatInternalID
FROM LookUp a, Links b, LookUp c
WHERE a.docType = 'docTypeMain'
and a.docID = b.docIDTop and b.docIDBottom = c.docID
and c.docType = 'docTypeSub'
;
您可以将此添加到您的旧查询＆＃34;以及：
只需将其添加到最终的SELECT
即可[...CTEs before...]
SELECT A.docId + ' # ' + B.vals AS [DocID # Plant],
A.docID,
A.partNumber,
A.prio,
B.vals AS Plant,
A.partNumber + '#' + A.material + '#' + A.[length] AS Identification,
A.[length],
SUBSTRING(CA.colors,0,LEN(CA.colors)) colors, --substring removes last comma
STUFF((SELECT ', ' + x.internalID
FROM LookUp AS x
WHERE x.PartNumber=A.PartNumber
FOR XML PATH(''),TYPE).value('.','nvarchar(max)'),1,2,'') AS ConcatInternalID
[...FROM...]
希望我能理解这一点，这可以帮助你...
答案 1 :(得分：2)
基于@Shnugo回答尝试这个未优化（尚未）回答，我认为@Shnugo没有检查链接表，因为您不需要更改您的数据信息：< / p>
[...CTEs before...]
SELECT A.docId + ' # ' + B.vals AS [DocID # Plant],
A.docID,
A.partNumber,
A.prio,
B.vals AS Plant,
A.partNumber + '#' + A.material + '#' + A.[length] AS Identification,
A.[length],
SUBSTRING(CA.colors,0,LEN(CA.colors)) colors, --substring removes last comma
STUFF((SELECT ', ' + X.internalID
FROM LOOKUP X
INNER JOIN LINKS Z
ON X.DOCID = Z.DOCIDTOP
INNER JOIN LOOKUP X2
ON X2.DOCID = Z.DOCIDBOTTOM
WHERE X2.PartNumber=A.PartNumber
FOR XML PATH(''),TYPE).value('.','nvarchar(max)'),1,2,'') AS ConcatInternalID
[...FROM...]