Question

I am writing a trigger and I am using inserted
Inserted is a single row
like

ColumnX |ColumnY|ColumnZ|
=========================
 A      | B     |C      |

I want to insert results to another table like this

ColumnName |Value|
==================
ColumnX    | A   |
ColumnY    | B   |
ColumnZ    | C   |

I have a lot of tables how can I make this?

Answer 1

UNPIVOT the result set, then insert them:

INSERT INTO Anothertable(Columnname, value)
SELECT Columnname, value
FROM tablename t
UNPIVOT
(
   value
   FOR ColumnName IN(ColumnX, ColumnY, ColumnZ)
) AS u;

SQL Fiddle Demo

---

To do this dymaincally:

DECLARE @cols AS NVARCHAR(MAX);
DECLARE @query AS NVARCHAR(MAX);

select @cols = STUFF((SELECT distinct ',' +
                        QUOTENAME(Columnname)
                      FROM table1 t
UNPIVOT
(
   value
   FOR ColumnName IN(ColumnX, ColumnY, ColumnZ)
) AS u
                      FOR XML PATH(''), TYPE
                     ).value('.', 'NVARCHAR(MAX)') 
                        , 1, 1, '');

SET @query = 'SELECT Columnname, value
              FROM table1 t
              UNPIVOT
              (
                 value
                 FOR ColumnName IN( ' + @cols + ' )
              ) AS u;'

execute(@query);

Updated SQL Fiddle Demo