Need query to convert Single Row Multiple Columns To Multiple rows

Question

Hi,
I have a table with single row like below
Column0 | Column1 | Column2 | Column3 | Column4|
Value0    | Value1    | Value2    | Value3    |  Value4  |
Am looking for a query to convert above table data to multiple rows having column name and its value in each row as shown below
Column0 | Value0
Column1 | Value1
Column2 | Value2
Column3 | Value3
Column4 | Value4
Thanks in advance.
Mohan

Answer 1

Hi ykMohan,
Dynamic UNPIVOT can be applied in this case as well.
CREATE TABLE dbo.T(ID INT,Column0 VARCHAR(99),Column1 VARCHAR(99),Column2 VARCHAR(99),Column3 VARCHAR(99),Column4 VARCHAR(99))
INSERT INTO T VALUES
(1,'Value0','Value1','Value2','Value3','Value4'),
(2,'Value0','Value1','Value2','Value3','Value4');
DECLARE @columns VARCHAR(MAX)
SELECT @columns=
STUFF(
SELECT ','+ COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME ='T' AND TABLE_SCHEMA='dbo' AND Column_name NOT IN('ID') FOR XML PATH('')
),1,1,'')
DECLARE @Sql NVARCHAR(MAX)
SET @Sql =
'SELECT ID, UPT.col,UPT.val FROM T
UNPIVOT
(val FOR col IN('+@columns+')) AS UPT'
EXEC sp_executeSQL @Sql
DROP TABLE T
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