Dovresti fare qualcosa del genere:
SELECT * FROM menu WHERE item_id = 1
UNION ALL
SELECT * FROM menu WHERE item_id = 1
UNION ALL
SELECT * FROM menu WHERE item_id = 2
Dovresti fare qualcosa del genere:
SELECT * FROM menu WHERE item_id = 1
UNION ALL
SELECT * FROM menu WHERE item_id = 1
UNION ALL
SELECT * FROM menu WHERE item_id = 2