MySQL: Simple way to toggle a value of an int field

Question

I know how to do this, but i think I\'ll overcomplicate it with double selects and so on.

How can you do this (example in pseudo-sql)

UPDATE some_table S         


        

Answer 1

I can see the answers of all experienced people and i too got updated with their answers.

what about this... i do this way...

UPDATE tablename SET fieldname = not fieldname

can any body give suggestions please if this will not be a feasible solution. with respect to execution speed or any other... what to say... fact... concept... .