SQL Getting Started Tutorial: SQL AVG () function

Source: Internet
Author: User

SQL Getting Started Tutorial: SQL AVG () function

AVG () function
AVG () function returns the average value of the values column.

AVG () syntax for the database

SELECT AVG (column_name) from table_name
Let's look at a table first.
 
   
    TD>2008/10/23 
      
_id< /th> orderdate orderprice customer
1 2008/11/12 1000 Hansen
2 1600 Nilsen
3 2008/09/02 7 Hansen
4 2008/09/03 Hansen
5 2008/08/30 Jensen
6 2008/10/04 Nilsen
 
   
   
Now, we are looking for the average value of the "Orderprice" field.

We use the following SQL statement:

 

 SELECT AVG (orderprice) as Orderaverage from Orders 
  
      
 output results. 
 
      
      
orderaverage
950
  
 
      
      
customer
Hansen
Nilsen
Jensen

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