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SQL AVG() Function


AVG() Function

The AVG() function returns the average value of a numeric column.

SQL AVG() Syntax


Demonstration Database

In this tutorial, we will use the tutorialpro sample database.

Below is the data from the "access_log" table:

+-----+---------+-------+------------+
| aid | site_id | count | date       |
+-----+---------+-------+------------+
|   1 |       1 |    45 | 2016-05-10 |
|   2 |       3 |   100 | 2016-05-13 |
|   3 |       1 |   230 | 2016-05-14 |
|   4 |       2 |    10 | 2016-05-14 |
|   5 |       5 |   205 | 2016-05-14 |
|   6 |       4 |    13 | 2016-05-15 |
|   7 |       3 |   220 | 2016-05-15 |
|   8 |       5 |   545 | 2016-05-16 |
|   9 |       3 |   201 | 2016-05-17 |
+-----+---------+-------+------------+

SQL AVG() Example

The following SQL statement gets the average value from the "count" column of the "access_log" table:

Example

Executing the above SQL outputs the following result:

The following SQL statement selects "site_id" and "count" where the access count is above the average access count:

Example

Executing the above SQL outputs the following result:

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