Как понять логику EXISTS в SQL запросах
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Как следует из названия, данная статья для тех, у кого есть сложности с пониманием SQL запросов, в составе которых, используется EXISTS, т.к., исходя из опыта, его использование частенько вызывает вопросы у начинающих, а иногда даже у продолжающих.
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BY SQL для тестировщика
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.
Launched in 2013, Telegram allows users to broadcast messages to a following via “channels”, or create public and private groups that are simple for others to access. Users can also send and receive large data files, including text and zip files, directly via the app.The platform said it has more than 500m active users, and topped 1bn downloads in August, according to data from SensorTower.SQL для тестировщика from hk