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Creating a database in Microsoft SQL Server instruction for beginners

In this article, I will talk in detail, especially for beginner programmers, about how to create a database in Microsoft SQL Server, as well as what y…

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PostgreSQL EXISTS condition

PostgreSQL EXISTS condition is used in combination with a subquery and is considered “satisfied” if the subquery returns at least one line. It can be …

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PostgreSQL condition AND

    PostgreSQL condition AND (also called AND operator) is used to check two or more conditions in SELECT, INSERT, UPDATE or DELETE operator….

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    PostgreSQL VIEW: how to create, update, and drop

    You will learn how to create, update, and drop VIEWS in PostgreSQL with syntax and examples….

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    PostgreSQL primary key

    You will learn how to create, drop, disable, and enable a primary key in PostgreSQL with syntax and examples….

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