IN empty set	0
IN non-empty set	1
NOT IN empty set	10
INNER JOIN empty set	0
INNER JOIN non-empty set	1
RIGHT JOIN empty set	0
RIGHT JOIN non-empty set	1
LEFT JOIN empty set	10
LEFT JOIN non-empty set	10
multiple sets IN empty set OR IN non-empty set	1
multiple sets IN empty set OR NOT IN non-empty set	9
multiple sets NOT IN empty set AND IN non-empty set	1
multiple sets INNER JOIN empty set AND IN empty set	0
multiple sets INNER JOIN empty set AND IN non-empty set	0
multiple sets INNER JOIN non-empty set AND IN non-empty set	1
IN empty set equals 0	10
IN empty set sum if	10