How to aggregate columns using mysql?

by dalton_moen , in category: MySQL , 5 months ago

How to aggregate columns using mysql?

Facebook Twitter LinkedIn Telegram Whatsapp

1 answer

by raphael_tillman , 5 months ago

@dalton_moen 

To aggregate columns using MySQL, you can use various aggregate functions provided by MySQL. Some commonly used aggregate functions are:

  1. SUM(): Calculates the sum of a column.
1
SELECT SUM(column_name) FROM table_name;


  1. AVG(): Calculates the average value of a column.
1
SELECT AVG(column_name) FROM table_name;


  1. COUNT(): Counts the number of rows in a column.
1
SELECT COUNT(column_name) FROM table_name;


  1. MAX(): Returns the highest value in a column.
1
SELECT MAX(column_name) FROM table_name;


  1. MIN(): Returns the lowest value in a column.
1
SELECT MIN(column_name) FROM table_name;


  1. GROUP BY: Groups the result by one or more columns.
1
SELECT column1, SUM(column2) FROM table_name GROUP BY column1;


You can combine these aggregate functions with other SQL clauses like WHERE, HAVING, etc. to filter and further manipulate the data.