I created a Boolean attribute for an Oracle table that checks if an address 
is the customer's current address.

@is_current_address.expression
def is_current_address(cls):
        return and_(cls.eff_date <= func.current_date(), cls.term_date >= 
func.current_date())

When I try to run a query with this it generates the following where clause:

WHERE (addresses.eff_date <= CURRENT_DATE AND addresses.term_date >= 
CURRENT_DATE) = 1

and generates the Oracle  error: 

ORA-00933: SQL command not properly ended
>
>
I believe this type of expression isn't supported in Oracle, however 
manually removing the "= 1" from the clause makes the query work.  Is there 
a different approach I need to take to make sure this is handled properly?

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