SQL AVG() Functions
The AVG() function returns the average value of a numeric column. It returns the average of all non NULL values
SELECT AVG(column_name) FROM table_name WHERE [condition];
Consider the tbl_student_record table having the following records
id | name | class | subject | city | phone | fee | fee_date |
---|---|---|---|---|---|---|---|
1 | Mohan | 2nd | Math | Agra | 999999990 | 500 | 2018-01-02 |
2 | Pooja | 3rd | English | Delhi | 999999991 | 200 | 2018-01-11 |
3 | Rahul | 4th | Math | Agra | 999999992 | 300 | 2018-01-05 |
4 | Suresh | 2nd | English | Agra | 999999993 | 400 | 2018-01-22 |
5 | Vivek | 3rd | Math | Agra | 999999994 | 500 | 2018-01-01 |
6 | Anuj | 2nd | English | Delhi | 999999995 | 600 | 2018-01-31 |
7 | Sanju | 4th | Math | Agra | 999999996 | 400 | 2018-01-17 |
8 | Rohit | 3rd | English | Delhi | 999999997 | 700 | 2018-01-10 |
9 | Mahesh | 3rd | Math | Agra | 999999998 | 800 | 2018-01-24 |
10 | Munesh | 4th | English | Delhi | 999999999 | 200 | 2018-01-09 |
Example: Below SQL Query we will average the total of fee records in the tbl_student_record table
SELECT AVG( fee ) FROM tbl_student_record
After Query Execution
Output
AVG(fee) |
---|
460 |