The SQL SUM() function is used to calculate sum of numbers.
		SELECT SUM(column_name)
		FROM table_name
		WHERE condition;
	
	In this example we calculate the average run of Virat kohili in 3 match.
| MatchNo | Name | Run | Wicket | 
|---|---|---|---|
| 1 | Virat | 78 | 1 | 
| 2 | Virat | 82 | 2 | 
| 3 | Viart | 50 | 0 | 
		SELECT SUM(Run)
                FROM cricket_score;
	
	210