SQL count() function
The SQL count() function is used to get the number of rows value from the database. It does not count the null value.
SQL count() Example:
Let's continue with our example of having SQL database with orders table.
Each order has grand total. You want to get the count of orders where grand total is above $350.
Use following syntax of SQL count() function to get the average value of all orders:
SELECT count(id) as orderCount FROM orders WHERE grand_total > 350;