Question

This is the query for a gaming application to get a list of targets for the enemy that excludes locations that the enemy can’t see. This is a simplified version of my query to target my specific question.

SELECT * FROM `game_moblist` WHERE  (posx!=0 AND posy!=0) AND (posx!=1100 AND posy!=220) 

posx is the x coordinate posy is the y coordinate

I’m writing a loop to exclude any tiles that cannot be seen
The issue I see is that its treated as if the parenthesis aren’t there. All posx=1100 are excluded and not the ordered pair (1100,220) what is the proper syntax for what I’m trying to do? The only solution I thought of is to combine the two numbers into a unique single number but I’d rather learn something new.

Answer 1

I think you mean:

WHERE NOT (posx=0 AND posy=0) 
  AND NOT (posx=1100 AND posy=220)

which can be rewritten also as:

WHERE (posx, posy) NOT IN ((0, 0), (1100, 200))