joining a table with a function

hi all,

i have a function of a user defined type it returns a record of values but
just a row.
select * from rec_f_consultar_alumno(a.ent_codigo, a.alu_codigo)

what i want to do now is a select in wich i can do a seq scan or an index
scan of a table and
pass the values i retrieve into the function. the select have to retrieve
the result of the function.
i can do that whit a function with setof but i want to know if it is
possible to do it with a select

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