question 2

Hi again,
I have this query :
select prestito.*, libro.tipo,libro.id_libro from prestito,libro where
prestito.id_libro =
 libro.id_libro_key
that return me (correct!):
id_libro|id_utente|data_prestito|visto|notifica1|notifica2|notifica3|tipo|id_libro
--------+---------+-------------+-----+---------+---------+---------+----+--------
      12|       37|   12-04-1998|f    |         |         |         |
1|s1
      13|       37|   12-04-1998|f    |         |         |         |
2|k1
(2 rows)

but if you see the item libro.id_libro is id_libro (s1,k1) and in the
prestito.*
 there is another id_libro (11,12). Now I want to know how can I select
the second "id_lib
ro".




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