Using Group Functions in the SELECT Clause in MySQL

Q

How To Use Group Functions in the SELECT Clause in MySQL?

✍: FYIcenter.com

A

If group functions are used in the SELECT clause, they will be used on the rows that meet the query selection criteria, the output of group functions will be returned as output of the query. The following select statement returns 3 values calculate by 3 group functions on all rows of the "fyi_links" table:

mysql> SELECT COUNT(*), MAX(counts), MIN(created) 
   FROM fyi_links;
+----------+-------------+---------------------+
| COUNT(*) | MAX(counts) | MIN(created)        |
+----------+-------------+---------------------+
|        7 |           8 | 2003-01-01 00:00:00 |
+----------+-------------+---------------------+
1 row in set (0.37 sec)

⇒ Group Functions with Non-group Selections in MySQL

⇐ What Are Group Functions in MySQL

⇑ SELECT Query Statements with GROUP BY in MySQL

⇑⇑ MySQL Database Tutorials

2018-01-06, 2294🔥, 0💬