},
		{
			name:       "date_diff_month_neg",
			query:      `SELECT date_diff(month, '2011T', '2010T') FROM S3Object LIMIT 1`,
			wantResult: `{"_1":-12}`,
		},
		{
			name:       "date_diff_days",
			query:      `SELECT date_diff(day, '2010-01-01T23:00:00Z', '2010-01-02T01:00:00Z') FROM S3Object LIMIT 1`,
			wantResult: `{"_1":0}`,
		},
		{
			name:       "date_diff_days_one",