Analytical functions are a powerful tool in SQL for working with data. In this post, we'll take a look at how to use the SUM, AVG, MIN, MAX, and COUNT functions to work with data in MySQL.
The SUM function is used to return the sum of a column of data. For example, if we have a table of data with a column for numbers, we can use the SUM function to get the sum of all the numbers in that column:
SELECT SUM(number_column)
FROM table_name;
The AVG function is used to return the average of a column of data. For example, if we have a table of data with a column for numbers, we can use the AVG function to get the average of all the numbers in that column:
SELECT AVG(number_column)
FROM table_name;
The MIN function is used to return the minimum value of a column of data. For example, if we have a table of data with a column for numbers, we can use the MIN function to get the minimum number in that column:
SELECT MIN(number_column)
FROM table_name;
The MAX function is used to return the maximum value of a column of data. For example, if we have a table of data with a column for numbers, we can use the MAX function to get the maximum number in that column:
SELECT MAX(number_column)
FROM table_name;
The COUNT function is used to return the number of rows in a table. For example, if we have a table of data, we can use the COUNT function to get the number of rows in that table:
SELECT COUNT(*)
FROM table_name;
These are just a few of the ways you can use analytical functions in SQL to work with data. For more information, check out the resources below.