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 SET an_int_value = (an_int_value==1 ? 0 : 1);

It must be an int value due to some other functionality, but how do you do it in a simple way?

Answer 1

UPDATE some_table SET an_int_value = IF(an_int_value=1, 0, 1);

http://dev.mysql.com/doc/refman/5.1/en/control-flow-functions.html#function_if

Answer 2

UPDATE some_table SET an_int_value = IF(an_int_value=1, 0, 1)

Answer 3

In this case, you could use an XOR type operation:

UPDATE some_table SET an_int_value = an_int_value XOR 1

This is assuming that an_int_value will always be 1 or 0 though.

Answer 4

Another option:

UPDATE some_table SET an_int_value = ABS(an_int_value - 1);

Answer 5

UPDATE table SET field = 1 - field

Answer 6

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... .