group by with a where clause code example

Example 1: GROUP BY clause; this is incompati

mysql> set global sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';

mysql> set session sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';

Example 2: group by in sql

GROUP BY: is used to collaborate
with the SELECT statement to arrange 
matching data into groups.

ORDER BY: is for sorting result
either in descending or ascending order.