Pass multiple sets or arrays of values to a function

Question

I\'m writing a PL/pgSQL function in PostgreSQL 9.3.10 to return who has attended certain classes/sessions from the following table:

Attendance
+-------+-----         


        

Answer 1

If you pass an array of records to the function it is simple:

with attendance (class, section, name) as(values
    (1, 1, 'Amy'),
    (1, 1, 'Bill'),
    (1, 2, 'Charlie'),
    (1, 2, 'Dan'),
    (2, 1, 'Emily'),
    (2, 1, 'Fred'),
    (2, 2, 'George')
)
select *
from attendance
where (class, section) = any(array[(1,1),(2,2)])
;
 class | section |  name  
-------+---------+--------
     1 |       1 | Amy
     1 |       1 | Bill
     2 |       2 | George