Given an array of arrays ( e.g. v = {{1,'a'},{2,'b'},{3,'c'},{2,'d'}} ) is it possible, in plain sql, to access the first element of the listed arrays using the IN function? Say I wanted just those with 2 as first element. "where 2 = any(v[1])" does not work and not sure it's supported. And I cannot craft a lhs to fussy-match each of the elements in v. Can this be done?