How do I select the first row per group in an SQL Query?

Question

I\'ve got this SQL query:

SELECT   Foo, Bar, SUM(Values) AS Sum
FROM     SomeTable
GROUP BY Foo, Bar
ORDER BY Foo DESC, Sum DESC

This resul

Answer 1

In general, try using Subqueries rather than joining and grouping - it often makes SQL that is much easier to understand.

SELECT Nick,
   (SELECT Description from Reasons WHERE Reasons.ID = (
       SELECT FIRST(Marks.ReasonId) from Marks WHERE Marks.PlayerID = Players.ID)
   ),
   (SELECT SUM(Value) from Marks WHERE Marks.PlayerID = Players.ID)