Which of the following SQL queries counts the number of occurrences for each value of the field order_type in the table orders?

Which of the following SQL queries counts the number of occurrences for each value of the field order_type in the table orders?
A .  SELECT order_type,COUNT(*) FROM orders WHERE order_type=order_type;
B .  SELECT order_type,COUNT(*) FROM orders GROUP BY order_type;
C .  COUNT(SELECT order_type FROM orders);
D .  SELECT COUNT(*) FROM orders ORDER BY order_type;
E .  SELECT AUTO_COUNT FROM orders COUNT order_type;

View Answer

Answer: B