/*
mysql> SELECT SUM(Credits) AS TotalCredits FROM Course;
+--------------+
| TotalCredits |
+--------------+
| 13 |
+--------------+
1 row in set (0.02 sec)
*/
/* Create the table */
Drop TABLE Course;
CREATE TABLE Course (
CourseID INT NOT NULL PRIMARY KEY,
Name VARCHAR(50),
Credits INT)
TYPE = InnoDB;
/* Insert data */
INSERT INTO Course (CourseID,Name,Credits) VALUES (1,'Java',5);
INSERT INTO Course (CourseID,Name,Credits) VALUES (2,'C#',5);
INSERT INTO Course (CourseID,Name,Credits) VALUES (3,'JavaScript',3);
/* Real command */
SELECT SUM(Credits) AS TotalCredits FROM Course;
|