ELECT Teacher.first_name, Teacher.last_name, COUNT(Schedule.id) AS amount_classes FROM Teacher LEFT JOIN Schedule ON Teacher.id = Schedule.teacher GROUP BY Teacher.first_name, Teacher.last

Вопрос пользователя:

ELECT Teacher.first_name, Teacher.last_name, COUNT(Schedule.id) AS amount_classes FROM Teacher LEFT JOIN Schedule ON Teacher.id = Schedule.teacher GROUP BY Teacher.first_name, Teacher.last_name;

Ответ нейросети:

This query retrieves the first name and last name of each teacher along with the count of classes they have scheduled. It uses a LEFT JOIN to include all teachers even if they have not scheduled any classes. The results are grouped by the teacher's first name and last name.

Напишите нам, если в вопросе есть ваши персональные данные ([email protected])

Последние вопросы: