Вводный курс: содержит основы SQL и будет полезен начинающим изучение.
▫️Урок 1. Что такое SQL? Установка локального сервера.
▫️Урок 2. Создание БД, таблиц и работа с ними.
▫️Урок 3. Добавление и обновление записей в БД.
▫️Урок 4. Удаление данных из БД.
▫️Урок 5. Выборка данных из БД. Where, Order, Limit.
▫️Урок 6. Создание индексов и работа с ними.
▫️Урок 7. Объединение данных.
▫️Урок 8. Псевдонимы, функции и Group By
BY SQL для тестировщика
n the U.S. people generally use Bitcoin as an alternative investment, helping diversify a portfolio apart from stocks and bonds. You can also use Bitcoin to make purchases, but the number of vendors that accept the cryptocurrency is still limited. Big companies that accept Bitcoin include Overstock, AT&T and Twitch. You may also find that some small local retailers or certain websites take Bitcoin, but you’ll have to do some digging. That said, PayPal has announced that it will enable cryptocurrency as a funding source for purchases this year, financing purchases by automatically converting crypto holdings to fiat currency for users. “They have 346 million users and they’re connected to 26 million merchants,” says Spencer Montgomery, founder of Uinta Crypto Consulting. “It’s huge.”
In recent times, Telegram has gained a lot of popularity because of the controversy over WhatsApp’s new privacy policy. In January 2021, Telegram was the most downloaded app worldwide and crossed 500 million monthly active users. And with so many active users on the app, people might get messages in bulk from a group or a channel that can be a little irritating. So to get rid of the same, you can mute groups, chats, and channels on Telegram just like WhatsApp. You can mute notifications for one hour, eight hours, or two days, or you can disable notifications forever.
SQL для тестировщика from tw