Tsql 要列出的SQL列
我有以下表格内容:- 我需要生成以下输出:- P1 C1Tsql 要列出的SQL列,tsql,unpivot,Tsql,Unpivot,我有以下表格内容:- 我需要生成以下输出:- P1 C1 P1 C3 P2 C1 P2 C4 P3 C2 P3 C3 P3 C4 如何从表中创建该列表 谢谢 p这应根据提供的信息进行 select u.P, -- whatever the column containing p1, p2, etc is called u.C, u.Contents -- what is stored in each cell from xtable unpivot ( Contents for C i
P1 C3
P2 C1
P2 C4
P3 C2
P3 C3
P3 C4 如何从表中创建该列表 谢谢
p这应根据提供的信息进行
select u.P, -- whatever the column containing p1, p2, etc is called
u.C,
u.Contents -- what is stored in each cell
from xtable
unpivot
(
Contents
for C in (c1, c2, c3)
) u
where u.Contents like 'x'
我稍微修改了Ako在评论中链接的示例。您必须使用它来获得所需的结果
DECLARE @MyTable TABLE
(Attribute VARCHAR(10) , C1 VARCHAR(10), C2 VARCHAR(10), C3 VARCHAR(10), C4 VARCHAR(10))
INSERT INTO @MyTable VALUES
('P1','X', NULL,'X',NULL), ('P2','X',NULL,NULL,'X'),('P3',NULL,'X','X','X')
SELECT * FROM @MyTable
SELECT uPivot.Attribute, uPivot.Quatr, uPivot.IsMarked
FROM @MyTable Tab1
UNPIVOT
(
IsMarked
for Quatr in (C1, C2, C3, C4)
) uPivot;
这就是我最后实施的解决方案
DECLARE @SQL NVARCHAR(MAX)
DECLARE @ColName TABLE (Name VARCHAR(500))
DECLARE @ColCSV VARCHAR(MAX)
INSERT INTO @ColName
SELECT
Column_Name
FROM
information_schema.columns
WHERE
Table_Name = 'SMC_PatientCondition'
AND Column_Name NOT IN
('ReportingCode',
'P_PatientId',
'P_SysId',
'Condition')
SET @ColCSV = (SELECT SUBSTRING((SELECT ',' + Name FROM @ColName FOR XML PATH ('')),2,2000) AS CSV)
SET @SQL =
('
SELECT
P_SysID,
Conditions
FROM
(
SELECT
P_SysId,
RIGHT(Conditions, LEN(Conditions)-2) Conditions,
HasCondition
FROM
SMC_PatientCondition
UNPIVOT
(
HasCondition FOR Conditions IN ('+ @ColCSV +')
)Con
) UserConditions
WHERE
HasCondition = ''Yes''
')
EXEC sp_executesql @SQL
你试过什么?我试过使用Unpivot,但我对它很不熟悉。我想这是我需要走的路,但我不知道如何正确使用它。你可以检查一下,我可以得到Unpivot语法,我只是在将它应用到我的问题上有困难非常感谢你的帮助非常感谢你的帮助