好的,我知道可能很难理解,随意编辑它以便更有意义。基本上我想旋转我的结果。我想选择* from(从表中选择col1,col2)tmp_table,但是将tmp_table的所有列都作为行。这是将是tmp_table的选择:
select
txt_description_1 label_1,
txt_description_2 label_2,
txt_description_3 label_3,
txt_description_4 label_4,
txt_description_5 label_5,
txt_description_6 label_6,
txt_description_7 label_7,
txt_description_8 label_8,
txt_description_9 label_9,
txt_description_10 label_10,
txt_description_11 label_11,
txt_description_12 label_12,
txt_description_13 label_13,
txt_description_14 label_14,
txt_description_15 label_15,
txt_description_16 label_16,
txt_description_17 label_17,
txt_description_18 label_18,
txt_description_19 label_19,
txt_description_20 label_20,
txt_description_21 label_21,
txt_description_22 label_22,
txt_description_23 label_23,
txt_description_24 label_24,
txt_description_25 label_25,
txt_description_26 label_26,
txt_description_27 label_27,
txt_description_28 label_28,
txt_description_29 label_29,
txt_description_30 label_30,
txt_description_31 label_31,
txt_description_32 label_32,
txt_description_33 label_33,
txt_description_34 label_34,
txt_description_35 label_35,
txt_description_36 label_36,
txt_description_37 label_37,
txt_description_38 label_38,
txt_description_39 label_39,
txt_description_40 label_40,
txt_description_41 label_41,
txt_description_42 label_42,
txt_description_43 label_43,
txt_description_44 label_44,
txt_description_45 label_45,
txt_description_46 label_46,
txt_description_47 label_47,
txt_description_48 label_48,
txt_description_49 label_49,
txt_description_50 label_50,
txt_description_51 label_51,
txt_description_52 label_52,
txt_description_53 label_53,
txt_description_54 label_54,
txt_description_55 label_55,
txt_description_56 label_56,
txt_description_57 label_57,
txt_description_58 label_58,
txt_description_59 label_59,
txt_description_60 label_60,
txt_info2 label_info2
from ngkbm_template_data_sets_
where practice_id = '0001'
and txt_data_set = @dataSet
and chk_label_values = 1
所以我们假设输出看起来像这样:
Protocol Test Dx Code Dx Test Code Interval Start Age Stop Age Gender NULL NULL Test Code (Medicare) Test Code (Medicare, Hish Risk) Interval (High Risk) Start Age (High Risk) Stop Age (High Risk) NULL NULL Seq # for Series Pre-Requisite Exam Pre-Requisite Exam Seq # Class NULL Other ID NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL Set Info / Reference:
我希望它显示如下:
Protocol
Test
Dx Code
Dx
Test Code
INTERVAL
Start Age
Stop Age
Gender
NULL
NULL
我也在为SSRS 2005做这个,所以这些限制适用。此外,select只会返回一行,因此处理多行不是问题。
答案 0 :(得分:1)
您可以使用CROSS APPLY
:
DECLARE @ngkbm_template_data_sets_ TABLE(
id INT IDENTITY(1,1) PRIMARY KEY,
txt_description_1 VARCHAR(50) NULL, -- or NVARCHAR,etc.
txt_description_2 VARCHAR(50) NULL,
txt_description_3 VARCHAR(50) NULL,
txt_description_4 VARCHAR(50) NULL
);
INSERT @ngkbm_template_data_sets_(txt_description_1,txt_description_2,txt_description_3,txt_description_4)
VALUES ('Protocol','Test','Dx',NULL);
SELECT x.id,y.*
FROM @ngkbm_template_data_sets_ x
CROSS APPLY(
SELECT x.txt_description_1 AS Value, 'txt_description_1' AS ColumnName
UNION ALL
SELECT x.txt_description_2 AS Value, 'txt_description_2' AS ColumnName
UNION ALL
SELECT x.txt_description_3 AS Value, 'txt_description_3' AS ColumnName
UNION ALL
SELECT x.txt_description_4 AS Value, 'txt_description_4' AS ColumnName
)y;
结果:
id Value ColumnName
-- -------- -----------------
1 Protocol txt_description_1
1 Test txt_description_2
1 Dx txt_description_3
1 NULL txt_description_4
编辑1:
在以下测试中,从CROSS APPLY + UNION ALL
和UNION ALL only
CPU time
,elapsed time
)具有相似的效果
CPU time = 156 ms, elapsed time = 2452 ms.
vs.
CPU time = 172 ms, elapsed time = 2344 ms.
但从LIO
(logical reads
)的角度来看,结果显示出巨大的差异:
Table 'SalesOrderHeader'. Scan count 1, logical reads 686
vs.
Table 'SalesOrderHeader'. Scan count 6, logical reads 2881.
每个解决方案的实际执行计划都显示了这种差异的原因:
CROSS APPLY + UNION ALL
解决方案仅使用一个Clustered Index Scan
,但UNION ALL only
解决方案使用四个Clustered Index Scan
运算符和两个Index Scan
运算符。此外,每个查询的估计总成本表明SQL Server“认为”CROSS APPLY + UNION ALL
(39%)解决方案比UNION ALL only
(61%)略好一点。对于此测试,我使用了AdventureWorks2008 R2 database。
SET NOCOUNT ON;
SET STATISTICS IO,TIME ON;
GO
PRINT 'CROSS APPLY';
SELECT h.SalesOrderID,x.*
FROM Sales.SalesOrderHeader h
CROSS APPLY(
SELECT h.SalesOrderNumber AS Value, 'SalesOrderNumber' AS RowType
UNION ALL
SELECT h.PurchaseOrderNumber, 'PurchaseOrderNumber'
UNION ALL
SELECT h.AccountNumber , 'AccountNumber'
UNION ALL
SELECT h.CreditCardApprovalCode , 'CreditCardApprovalCode'
UNION ALL
SELECT h.Comment , 'Comment'
UNION ALL
SELECT CONVERT(VARCHAR(36),h.rowguid) , 'rowguid'
)x
GO
PRINT 'UNION ALL only';
SELECT h.SalesOrderID,h.SalesOrderNumber AS Value, 'SalesOrderNumber' AS RowType FROM Sales.SalesOrderHeader h
UNION ALL
SELECT h.SalesOrderID,h.PurchaseOrderNumber, 'PurchaseOrderNumber' FROM Sales.SalesOrderHeader h
UNION ALL
SELECT h.SalesOrderID,h.AccountNumber , 'AccountNumber' FROM Sales.SalesOrderHeader h
UNION ALL
SELECT h.SalesOrderID,h.CreditCardApprovalCode , 'CreditCardApprovalCode' FROM Sales.SalesOrderHeader h
UNION ALL
SELECT h.SalesOrderID,h.Comment , 'Comment' FROM Sales.SalesOrderHeader h
UNION ALL
SELECT h.SalesOrderID,CONVERT(VARCHAR(36),h.rowguid) , 'rowguid' FROM Sales.SalesOrderHeader h
GO
SET NOCOUNT OFF;
SET STATISTICS IO,TIME OFF;
GO
/*
-- Output
SQL Server parse and compile time:
CPU time = 0 ms, elapsed time = 0 ms.
CROSS APPLY + UNION ALL
SQL Server Execution Times:
CPU time = 0 ms, elapsed time = 0 ms.
Table 'SalesOrderHeader'. Scan count 1, logical reads 686, physical reads 0, read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.
SQL Server Execution Times:
CPU time = 156 ms, elapsed time = 2452 ms.
SQL Server parse and compile time:
CPU time = 0 ms, elapsed time = 0 ms.
UNION ALL only
SQL Server Execution Times:
CPU time = 0 ms, elapsed time = 0 ms.
Table 'SalesOrderHeader'. Scan count 6, logical reads 2881, physical reads 0, read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.
SQL Server Execution Times:
CPU time = 172 ms, elapsed time = 2344 ms.
SQL Server parse and compile time:
CPU time = 0 ms, elapsed time = 0 ms.
SQL Server Execution Times:
CPU time = 0 ms, elapsed time = 0 ms.
*/
答案 1 :(得分:0)
我真的不需要按照Bogdan Sahlean的建议申请。相反,简单地将一堆选择结合在一起,然后从中进行选择,消除了制作表变量或类似内容的需要......
SELECT name FROM (
SELECT 1 id, txt_description_1 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 2 id, txt_description_2 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 3 id, txt_description_3 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 4 id, txt_description_4 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 5 id, txt_description_5 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 6 id, txt_description_6 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 7 id, txt_description_7 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 8 id, txt_description_8 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 9 id, txt_description_9 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 10 id, txt_description_10 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 11 id, txt_description_11 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 12 id, txt_description_12 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 13 id, txt_description_13 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 14 id, txt_description_14 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 15 id, txt_description_15 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 16 id, txt_description_16 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 17 id, txt_description_17 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 18 id, txt_description_18 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 19 id, txt_description_19 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 20 id, txt_description_20 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 21 id, txt_description_21 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 22 id, txt_description_22 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 23 id, txt_description_23 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 24 id, txt_description_24 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 25 id, txt_description_25 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 26 id, txt_description_26 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 27 id, txt_description_27 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 28 id, txt_description_28 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 29 id, txt_description_29 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 30 id, txt_description_30 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 31 id, txt_description_31 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 32 id, txt_description_32 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 33 id, txt_description_33 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 34 id, txt_description_34 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 35 id, txt_description_35 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 36 id, txt_description_36 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 37 id, txt_description_37 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 38 id, txt_description_38 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 39 id, txt_description_39 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 40 id, txt_description_40 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 41 id, txt_description_41 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 42 id, txt_description_42 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 43 id, txt_description_43 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 44 id, txt_description_44 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 45 id, txt_description_45 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 46 id, txt_description_46 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 47 id, txt_description_47 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 48 id, txt_description_48 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 49 id, txt_description_49 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 50 id, txt_description_50 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 51 id, txt_description_51 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 52 id, txt_description_52 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 53 id, txt_description_53 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 54 id, txt_description_54 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 55 id, txt_description_55 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 56 id, txt_description_56 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 57 id, txt_description_57 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 58 id, txt_description_58 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 59 id, txt_description_59 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 60 id, txt_description_60 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1 UNION
SELECT 61 id, txt_info2 name FROM ngkbm_template_data_sets_ where practice_id = '0001' and txt_data_set = 'Protocols' and chk_label_values = 1
) tmp_table
ORDER BY id