In SQL, the GROUP BY statement is used for organizing similar data into groups.
For example: To find the number of customers in each country.
The GROUP BY statement is often used with aggregate functions (COUNT, MAX, MIN, SUM, AVG) to group the result set by one or more columns.
Important Points:
The GROUP BY clause is used with the SELECT statement in the SQL query.
The GROUP BY clause is placed after the WHERE clause in SQL.
The GROUP BY clause is placed before the ORDER BY clause in SQL.
This version corrects spelling mistakes, grammar mistakes, and conceptual errors, providing a clear and accurate explanation of the GROUP BY clause and its usage.
