Question

I have a two player game which stores scores in a table.

I want to select high scores from the table, this is my current code:


SELECT * FROM games
ORDER BY GREATEST(player1Score,player2Score) DESC
LIMIT 10


The problem is it only returns one instance of each row, even if for example the lower of the two scores in row 1 warrants inclusion in the top 10.

Answer 1

Use UNION ALL:

SELECT col1, col2, col3, player1Score AS score FROM games
UNION ALL
SELECT col1, col2, col3, player2Score AS score FROM games
ORDER BY score DESC
LIMIT 10

Also, don’t use SELECT *. List the columns explicitly.