why de sql compiler do not parse de following query?

select A_id,B_id,AB_requested
from A inner join ( AB inner join B on AB.parameter_autoInc = B.parameter_autoInc )
on A.autoInc = AB.autoInc

supose that A,B,AB are tables and exists your associated columns

Try this:
SELECT A.id,B.id,AB.requested
FROM A INNER JOIN AB ON A.autoInc = AB.autoInc INNER JOIN B ON AB.parameter_autoInc = B.parameter_autoInc

Thanks shahchi1, the sintax is correct