How can I count unique pairs of values in SQL?

Question

With the following sql statement I can get all unique values with their counts for a given column:

select column, count(column) as count 
         from table          


        

Answer 1

You've almost got it correct... You just add an additional GROUP BY column like so:

SELECT [first_name], [last_name], COUNT(*) AS [Count] 
FROM [Table]
GROUP BY [first_name], [last_name]
ORDER BY [Count] DESC;