April 2020
Beginner to intermediate
540 pages
14h 14m
Russian
Content preview from MongoDB: полное руководство
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Глава 4
Выполнение запросов
В этой главе подробно рассматривается, как выполнять запросы. Основ-
ные области:
• вы можете запрашивать диапазоны, установить включение, нера-
венства и многое другое, используя условные операторы, начинаю-
щиеся с символа
$;
• запросы возвращают курсор базы данных, который лениво возвра-
щает пакеты документов по мере необходимости;
• существует множество метаопераций, которые можно выполнять с
курсором, включая пропуск определенного количества результатов,
ограничение количества возвращаемых результатов и сортировку
результатов.
Знакомство с методом nd
Метод nd используется в MongoDB для выполнения запросов. ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.