Write a query in SQL to count the number of available rooms for each block in each floor.
Sample table: room
roomnumber | roomtype | blockfloor | blockcode | unavailable
-----------+----------+------------+-----------+-------------
101 | Single | 1 | 1 | f
102 | Single | 1 | 1 | f
103 | Single | 1 | 1 | f
111 | Single | 1 | 2 | f
112 | Single | 1 | 2 | t
113 | Single | 1 | 2 | f
121 | Single | 1 | 3 | f
122 | Single | 1 | 3 | f
123 | Single | 1 | 3 | f
201 | Single | 2 | 1 | t
202 | Single | 2 | 1 | f
203 | Single | 2 | 1 | f
211 | Single | 2 | 2 | f
212 | Single | 2 | 2 | f
213 | Single | 2 | 2 | t
221 | Single | 2 | 3 | f
222 | Single | 2 | 3 | f
223 | Single | 2 | 3 | f
301 | Single | 3 | 1 | f
302 | Single | 3 | 1 | t
303 | Single | 3 | 1 | f
311 | Single | 3 | 2 | f
312 | Single | 3 | 2 | f
313 | Single | 3 | 2 | f
321 | Single | 3 | 3 | t
322 | Single | 3 | 3 | f
323 | Single | 3 | 3 | f
401 | Single | 4 | 1 | f
402 | Single | 4 | 1 | t
403 | Single | 4 | 1 | f
411 | Single | 4 | 2 | f
412 | Single | 4 | 2 | f
413 | Single | 4 | 2 | f
421 | Single | 4 | 3 | t
422 | Single | 4 | 3 | f
423 | Single | 4 | 3 | f
Sql programming
Sample Output:
Floor | Block | Number of available rooms -------+-------+--------------------------- 1 | 1 | 3 1 | 2 | 2 1 | 3 | 3 2 | 1 | 2 2 | 2 | 2 2 | 3 | 3 3 | 1 | 2 3 | 2 | 3 3 | 3 | 2 4 | 1 | 2 4 | 2 | 3 4 | 3 | 2 (12 rows)need an explanation for this answer? contact us directly to get an explanation for this answer