Question

What would it be the simplest way to merge a result like this from a sql query to be displayed in an asp.net gridview?

NULL   Tarde Fer  W. Lunes
Mañana NULL  Fer  W. Lunes

I need the result to look like this

Mañana Tarde Fer  W. Lunes

Answer 1

Assuming Table

Col1      Col2     Col3    Col4
-------   ------   ------  --------
NULL      Tarde    Fer     W. Lunes
Mañana    NULL     Fer     W. Lunes

Then

SELECT MAX(Col1) AS Col1, MAX(Col2) AS Col2, Col3, Col4
FROM YourTable
GROUP BY Col3, Col4