User selects start and end date....from 25 to 27....

+---------+------+-----------+
| day_Num | qty | room_Type |
+---------+------+-----------+
| 25 | 2 | single |
| 25 | 0 | double |
| 25 | 0 | ensuite |
| 26 | 6 | single |
| 26 | 13 | double |
| 26 | 5 | ensuite |
| 27 | 1 | single |
| 27 | 1 | double |
| 27 | 1 | ensuite |
+---------+------+-----------+

room_Type = double and ensuite has ZERO qty....so all the related data with double and ensuite...should not be printed...so the OUTPUT should be:

+---------+------+-----------+
| day_Num | qty | room_Type |
+---------+------+-----------+
| 25 | 2 | single |
| 26 | 6 | single |
| 27 | 1 | single |
+---------+------+-----------+

And from here then... the lowest qty should be printed out, so the FINAL OUTPUT should be:

+---------+------+-----------+
| day_Num | qty | room_Type |
+---------+------+-----------+
| 27 | 1 | single |
+---------+------+-----------+

Anyone know what the query should be?

if it's for MySQL then;

SELECT day_num,qty,room_type FROM rooms WHERE day_num BETWEEN 25 AND 27 AND qty > 0 ORDER BY qty ASC LIMIT 1;

for SQL server

SELECT TOP 1 day_num,qty,room_type FROM rooms WHERE day_num BETWEEN 25 AND 27 AND qty > 0 ORDER BY qty ASC ;