Практикум. Обрабатываем результаты и делаем сложные запросы
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Здесь:
▫️Подсчет строк в результате запроса COUNT
▫️Оператор GROUP BY
▫️Оператор HAVING
▫️Джойны и алиасы
▫️UPDATE данных
▫️Представления (views)
▫️Хранимые процедуры
▫️Триггеры SQL
BY SQL для тестировщика
Mr. Durov launched Telegram in late 2013 with his brother, Nikolai, just months before he was pushed out of VK, the Russian social-media platform he founded. Mr. Durov pitched his new app—funded with the proceeds from the VK sale—less as a business than as a way for people to send messages while avoiding government surveillance and censorship.
Cryptoassets enthusiasts use this application for their trade activities, and they may make donations for this cause.If somehow Telegram do run out of money to sustain themselves they will probably introduce some features that will not hinder the rudimentary principle of Telegram but provide users with enhanced and enriched experience. This could be similar to features where characters can be customized in a game which directly do not affect the in-game strategies but add to the experience.
SQL для тестировщика from hk