如何在SQL Server 2005中的sql表的枢轴上添加其他列? [英] How to make additional columns on pivot of sql table in SQL Server 2005?
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问题描述
After getting such a great feedback from my last question. Maybe someone can help me with this problem also.
我必须从SQL Server旋转给定的表，但正常的枢轴是行不通的(就我所尝试的而言).那么有人知道如何将表格旋转为所需的格式吗?
I have to rotate a given table from an SQL Server but a normal pivot just doesn't work (as far as i tried). So has anybody an idea how to rotate the table into the desired format?
只是使问题更加复杂，给定标签的列表可能会有所不同，并且有可能在任何给定时间输入新的标签名称.
Just to make the problem more complicated, the list of given labels can vary and it is possible that a new label name can come into at any given time.
ID | Label | Numerator | Denominator | Ratio
---+-----------------+-------------+---------------+--------
1 | LabelNameOne | 41 | 10 | 4,1
1 | LabelNameTwo | 0 | 0 | 0
1 | LabelNameThree | 21 | 10 | 2,1
1 | LabelNameFour | 15 | 10 | 1,5
2 | LabelNameOne | 19 | 19 | 1
2 | LabelNameTwo | 0 | 0 | 0
2 | LabelNameThree | 15 | 16 | 0,9375
2 | LabelNameFive | 19 | 19 | 1
2 | LabelNameSix | 17 | 17 | 1
3 | LabelNameOne | 12 | 12 | 1
3 | LabelNameTwo | 0 | 0 | 0
3 | LabelNameThree | 11 | 12 | 0,9167
3 | LabelNameFour | 12 | 12 | 1
3 | LabelNameSix | 0 | 1 | 0
想要的结果
ID | LabelNameOneNumerator | LabelNameOneDenominator | LabelNameOneRatio | LabelNameTwoNumerator | LabelNameTwoDenominator | LabelNameTwoRatio | LabelNameThreeNumerator | LabelNameThreeDenominator | LabelNameThreeRatio | ...
---+-----------------------+-------------------------+-------------------+-----------------------+-------------------------+-------------------+-------------------------+---------------------------+---------------------+-----
1 | 41 | 10 | 4,1 | 0 | 0 | 0 | 21 | 10 | 2,1 | ...
2 | 19 | 19 | 1 | 0 | 0 | 0 | 15 | 16 | 0,9375 | ...
3 | 12 | 12 | 1 | 0 | 0 | 0 | 11 | 12 | 0,9167 | ...
我知道，在为之前的问题提供了很好的答案之后，我应该能够自己解决这个问题，但是我只是无法绕开这个枢纽，枢纽部分.
I know, after getting such a good answer for my previous question i should be able to solve this problem on myself, but i just can't get my head around this pivot, unpivot part.
如果您还需要更多SQL方式的示例数据，则可以尝试以下一种方法:
Also if you need the sample data in a more SQL way, you can try this one:
DECLARE @src AS TABLE
(
ID int NOT NULL
,Label varchar(14) NOT NULL
,Numerator int NOT NULL
,Denominator int NOT NULL
,Ratio decimal(10, 4) NOT NULL
) ;
INSERT INTO @src
VALUES (1, 'LabelNameOne', 41, 10, 4.1) ;
INSERT INTO @src
VALUES (1, 'LabelNameTwo', 0, 0, 0) ;
INSERT INTO @src
VALUES (1, 'LabelNameThree', 21, 10, 2.1) ;
INSERT INTO @src
VALUES (1, 'LabelNameFour', 15, 10, 1.5) ;
INSERT INTO @src
VALUES (2, 'LabelNameOne', 19, 19, 1) ;
INSERT INTO @src
VALUES (2, 'LabelNameTwo', 0, 0, 0) ;
INSERT INTO @src
VALUES (2, 'LabelNameThree', 15, 16, 0.9375) ;
INSERT INTO @src
VALUES (2, 'LabelNameFive', 19, 19, 1) ;
INSERT INTO @src
VALUES (2, 'LabelNameSix', 17, 17, 1) ;
INSERT INTO @src
VALUES (3, 'LabelNameOne', 12, 12, 1) ;
INSERT INTO @src
VALUES (3, 'LabelNameTwo', 0, 0, 0) ;
INSERT INTO @src
VALUES (3, 'LabelNameThree', 11, 12, 0.9167) ;
INSERT INTO @src
VALUES (3, 'LabelNameFour', 12, 12, 1) ;
INSERT INTO @src
VALUES (3, 'LabelNameSix', 0, 1, 0) ;
推荐答案
您需要在PIVOT之前合并标签.列列表还需要考虑标签可能性的交叉连接:
You need to combine the labels before the PIVOT. The column list also needs to take account of the cross join of label possibilities:
SET NOCOUNT ON ;
DECLARE @pivot_cols AS varchar(max) ;
DECLARE @src AS TABLE
(
ID int NOT NULL
,Label varchar(14) NOT NULL
,Numerator int NOT NULL
,Denominator int NOT NULL
,Ratio decimal(5, 4) NOT NULL
) ;
DECLARE @label_order AS TABLE
(
Label varchar(14) NOT NULL
,Sort int NOT NULL
)
DECLARE @sub_label_order AS TABLE
(
SubLabel varchar(14) NOT NULL
,Sort int NOT NULL
)
INSERT INTO @src
VALUES (1, 'LabelNameOne', 41, 10, 4.1) ;
INSERT INTO @src
VALUES (1, 'LabelNameTwo', 0, 0, 0) ;
INSERT INTO @src
VALUES (1, 'LabelNameThree', 21, 10, 2.1) ;
INSERT INTO @src
VALUES (1, 'LabelNameFour', 15, 10, 1.5) ;
INSERT INTO @src
VALUES (2, 'LabelNameOne', 19, 19, 1) ;
INSERT INTO @src
VALUES (2, 'LabelNameTwo', 0, 0, 0) ;
INSERT INTO @src
VALUES (2, 'LabelNameThree', 15, 16, 0.9375) ;
INSERT INTO @src
VALUES (2, 'LabelNameFive', 19, 19, 1) ;
INSERT INTO @src
VALUES (2, 'LabelNameSix', 17, 17, 1) ;
INSERT INTO @src
VALUES (3, 'LabelNameOne', 12, 12, 1) ;
INSERT INTO @src
VALUES (3, 'LabelNameTwo', 0, 0, 0) ;
INSERT INTO @src
VALUES (3, 'LabelNameThree', 11, 12, 0.9167) ;
INSERT INTO @src
VALUES (3, 'LabelNameFour', 12, 12, 1) ;
INSERT INTO @src
VALUES (3, 'LabelNameSix', 0, 1, 0) ;
INSERT INTO @label_order
VALUES ('LabelNameOne', 1) ;
INSERT INTO @label_order
VALUES ('LabelNameTwo', 2) ;
INSERT INTO @label_order
VALUES ('LabelNameThree', 3) ;
INSERT INTO @label_order
VALUES ('LabelNameFour', 4) ;
INSERT INTO @label_order
VALUES ('LabelNameFive', 5) ;
INSERT INTO @label_order
VALUES ('LabelNameSix', 6) ;
INSERT INTO @sub_label_order
VALUES ('Numerator', 1) ;
INSERT INTO @sub_label_order
VALUES ('Denominator', 2) ;
INSERT INTO @sub_label_order
VALUES ('Ratio', 3) ;
WITH Labels
AS (
SELECT DISTINCT
src.Label + sublabel.SubLabel AS Label
,ISNULL(label_order.Sort, 0) AS Sort
,ISNULL(sublabel.Sort, 0) AS SubSort
FROM @src AS src
CROSS JOIN @sub_label_order AS sublabel
LEFT JOIN @label_order AS label_order
ON src.label = label_order.label
)
SELECT @pivot_cols = COALESCE(@pivot_cols + ',', '') + QUOTENAME(Label, '[')
FROM Labels
ORDER BY Sort
,SubSort
,Label ;
DECLARE @template AS varchar(max) ;
SET @template = '
DECLARE @src AS TABLE
(
ID int NOT NULL
,Label varchar(14) NOT NULL
,Numerator int NOT NULL
,Denominator int NOT NULL
,Ratio decimal(5, 4) NOT NULL
) ;
INSERT INTO @src
VALUES (1, ''LabelNameOne'', 41, 10, 4.1) ;
INSERT INTO @src
VALUES (1, ''LabelNameTwo'', 0, 0, 0) ;
INSERT INTO @src
VALUES (1, ''LabelNameThree'', 21, 10, 2.1) ;
INSERT INTO @src
VALUES (1, ''LabelNameFour'', 15, 10, 1.5) ;
INSERT INTO @src
VALUES (2, ''LabelNameOne'', 19, 19, 1) ;
INSERT INTO @src
VALUES (2, ''LabelNameTwo'', 0, 0, 0) ;
INSERT INTO @src
VALUES (2, ''LabelNameThree'', 15, 16, 0.9375) ;
INSERT INTO @src
VALUES (2, ''LabelNameFive'', 19, 19, 1) ;
INSERT INTO @src
VALUES (2, ''LabelNameSix'', 17, 17, 1) ;
INSERT INTO @src
VALUES (3, ''LabelNameOne'', 12, 12, 1) ;
INSERT INTO @src
VALUES (3, ''LabelNameTwo'', 0, 0, 0) ;
INSERT INTO @src
VALUES (3, ''LabelNameThree'', 11, 12, 0.9167) ;
INSERT INTO @src
VALUES (3, ''LabelNameFour'', 12, 12, 1) ;
INSERT INTO @src
VALUES (3, ''LabelNameSix'', 0, 1, 0) ;
WITH src_conformed
AS (
SELECT ID
,Label
,CAST (Numerator AS decimal(10, 4)) AS Numerator
,CAST (Denominator AS decimal(10, 4)) AS Denominator
,CAST (Ratio AS decimal(10, 4)) AS Ratio
FROM @src
),
UNPIVOTED
AS (
SELECT *
FROM src_conformed UNPIVOT ( Val FOR Col IN (Numerator, Denominator, Ratio) ) AS unpvt
)
,COMBINED AS (SELECT ID, Label + Col AS NewLabel, Val
FROM UNPIVOTED)
SELECT *
FROM COMBINED PIVOT ( SUM(Val) FOR NewLabel IN ({@pivot_cols}) ) AS pvt
ORDER BY ID ;' ;
SET @template = REPLACE(@template, '{@pivot_cols}', @pivot_cols) ;
EXEC (@template) ;
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