Query should fail 1 Query should fail 2 Query involving aliases should fail on submission 2000-01-01 2 b 2000-01-01 5 e 2000-02-01 2 b 2000-02-01 5 e mutation_1.txt DELETE WHERE x = 1 [''] [1] 0 1 mutation_5.txt DELETE WHERE (x % 2) = 1 [''] [5] 0 1 mutation_6.txt DELETE WHERE s = \'d\' [''] [6] 0 1