SQL Server convert columns to rows

Question

I have a sql table with current value and previous value.

Id  Value1  PValue1 Value2  PValue2
1   A       A       V       V1
2   B       B1      W       W1
3         


        

Answer 1

Finally, and for completeness, there is an UNPIVOT command. However, since you have two columns you want to unpivot, it'd probably be simpler to use one of the other solutions.