Using the aggregate functions ANY, SOME, EVERY with MySQL

If you have used SQL a bit, you are certainly familiar with so-called set functions or aggregate functions COUNT, SUM, AVG, described in the manual. For example, let’s say that I am the owner of a shop and I keep track of daily sales in this table:

create table sales (month int, day int, amount int);

The first column is the number of the month, between 1 and 12, the second column is the number of the day in the month, between 1 and 31, and the third column is how much we sold on that date.…

Source: mysqlserverteam.com

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