Para fazer uso efetivo do índice, você pode reescrever o predicado IN
(x0, y0, x1, y1) IN ((4, 3, 5, 6),(9, 3, 2, 1))
Assim:
( ( x0 = 4 AND y0 = 3 AND x1 = 5 AND y1 = 6 )
OR ( x0 = 9 AND y0 = 3 AND x1 = 2 AND y1 = 1 )
)
(x0, y0, x1, y1) IN ((4, 3, 5, 6),(9, 3, 2, 1))
( ( x0 = 4 AND y0 = 3 AND x1 = 5 AND y1 = 6 )
OR ( x0 = 9 AND y0 = 3 AND x1 = 2 AND y1 = 1 )
)
