Shane Ambler <pgsql@xxxxxxxxxxxxxxxx> writes: > If you look at the bool type you will find it calls a function called > boolout(bool) which returns a cstring to return the data for the boolean > - you could replace this with your own function that returns a 1 or 0 > instead of true or false. Similarly the functions to input/compare etc > can be changed/replaced. I think actually what he needs is what Peter suggested upthread, namely to weaken the context-restriction on the int-to-bool cast. For a comparison like WHERE boolcol = 1 the system is still gonna see that as a bool vs int comparison, and it won't take it unless int-to-bool is an implicit cast. Another route might be to create a bool = int operator. That seems less likely to break expected behaviors, but it'd be more work. regards, tom lane