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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 condition OR

    PostgreSQL condition OR is used to check two or more conditions under which records are returned when any of these conditions are met. It can be used …

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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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