\[DELETE FROM customers WHERE name='John Doe';\]
This query retrieves all columns (*) from the customers table where the country is ‘USA’. Martin Gruber Understanding Sql.pdf
The GROUP BY clause is used to group data based on one or more columns. The HAVING clause is used to filter grouped data. For example: $ \(SELECT country, COUNT(*) FROM customers GROUP BY country HAVING COUNT(*)>10;\) $ \[DELETE FROM customers WHERE name='John Doe';\] This query
The SELECT statement is used to retrieve data from a database. The basic syntax is: $ \(SELECT column1, column2, ... FROM table_name;\) $ \[DELETE FROM customers WHERE name='John Doe'