{
			name:       "date_diff_days_one",
			query:      `SELECT date_diff(day, '2010-01-01T23:00:00Z', '2010-01-02T23:00:00Z') FROM S3Object LIMIT 1`,
			wantResult: `{"_1":1}`,
		},
		{
			name:       "cast_from_int_to_float",
			query:      `SELECT cast(1 as float) FROM S3Object LIMIT 1`,
			wantResult: `{"_1":1}`,
		},
		{
			name:       "cast_from_float_to_float",