#почитать
В этой лекции углубимся в расширенные возможности SELECT:
▫️как "сложить" и "вычесть" выборки (UNION/INTERSECT/EXCEPT)
▫️как запомнить их и использовать повторно (даже в рекурсивных запросах)
▫️что дают оконные функции (WINDOW) и соединения (JOIN)
BY SQL для тестировщика
Importantly, that investor viewpoint is not new. It cycles in when conditions are right (and vice versa). It also brings the ineffective warnings of an overpriced market with it.Looking toward a good 2022 stock market, there is no apparent reason to expect these issues to change.
The messaging service and social-media platform owes creditors roughly $700 million by the end of April, according to people briefed on the company’s plans and loan documents viewed by The Wall Street Journal. At the same time, Telegram Group Inc. must cover rising equipment and bandwidth expenses because of its rapid growth, despite going years without attempting to generate revenue.
SQL для тестировщика from kr