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Can we use AVG in where clause?
SQL AVG() with where clause We can find the average of only those rows which satisfy the given condition using where clause. The following SQL statement finds the average price of only those products where quantity is greater than 50.
How do you use the average function in MySQL?
MySQL AVG function is used to find out the average of a field in various records. You can take average of various records set using GROUP BY clause. Following example will take average all the records related to a single person and you will have average typed pages by every person.
How do you calculate average in SQL?
Introduction to MySQL AVG() function You use the DISTINCT operator in the AVG function to calculate the average value of the distinct values. For example, if you have a set of values 1,1,2,3, the AVG function with DISTINCT operator will return 2 i.e., (1 + 2 + 3) / 3 .
What is the use of AVG () function in SQL?
SQL AVG function is used to find out the average of a field in various records. You can take average of various records set using GROUP BY clause. Following example will take average all the records related to a single person and you will have average typed pages by every person.
How do you calculate salary for each department?
We can apply AVG function multiple times in a single SQL statement to calculate the average value of a set of average values. For example, we can use the AVG function to calculate the average salary of employees in each department, and apply the AVG function one more time to calculate the average salary of departments.
What is the syntax of the AVG function?
Introduction to SQL AVG function The SQL AVG function is an aggregate function that calculates the average value of a set. The following illustrates the syntax of the SQL AVG function: AVG ([ALL|DISTINCT] expression)
How to use SQL distinct clause in Avg function?
You can use the SQL DISTINCT clause within the AVG function. For example, the SELECT statement below returns the combined average cost of unique cost values where the category is Clothing. SELECT AVG(DISTINCT cost) AS “Average Cost” FROM products WHERE category = ‘Clothing’;
How to Alias the AVG function in SQL?
In this SQL AVG Function example, we’ve aliased the AVG (cost) expression as “Average Cost”. As a result, “Average Cost” will display as the field name when the result set is returned. You can use the SQL DISTINCT clause within the AVG function.
When to use unique values in Avg function?
By default, the AVG function uses ALL whether we specify it or not. If we specify the DISTINCT keyword explicitly, the AVG function will take the unique values only in the calculation.