MySQL: return “0” & “1” rather than “false” & “true”

Question

I need to return true or false rather than 1 & 0, using following query:

select if(u.id is null,false         


        

Answer 1

TRUE/FALSE is equivalent to 1/0. It's just a matter of how your front end displays it.

If you need to return the strings "true" and "false" (which I don't suggest - handle that in the display) then you'll have to account for that as well:

IF(IF(u.id ISNULL,false,true) = 1, 'TRUE', 'FALSE')