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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 index

PostgreSQL index: You will learn how to create, delete, and rename indexes in PostgreSQL with syntax and examples….

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PostgreSQL Constraints

PostgreSQL Constraints: You’ll learn how to create, add, and remove unique constraints in PostgreSQL with syntax and examples….

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PostgreSQL LIKE condition

PostgreSQL LIKE condition allows using wildcards (metacharacters) in WHERE proposal of SELECT, INSERT, UPDATE or DELETE operator. This allows for patt…

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