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SQL exercises

SQL exercises on hospital Database: Count the number available rooms

SQL hospital Database: Exercise-6 with Solution

6. Write a query in SQL to count the number available rooms.

Sample table: room


Sample Solution:

SELECT count(*) "Number of available rooms"
FROM room
WHERE unavailable='false';

Sample Output:

 Number of available rooms
---------------------------
                        29
(1 row)

Practice Online


E R Diagram of Hospital Database:

E R Diagram: SQL Hospital Database.

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