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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 change user password

The ALTER USER operator is used to change the user password in a PostgreSQL database….

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PostgreSQL Join

PostgreSQL JOIN is used to extract data from multiple tables. PostgreSQL JOIN is executed whenever two or more tables are combined in an SQL statement…

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PostgreSQL EXCEPT statement

The PostgreSQL EXCEPT statement is used to return all lines in the first SELECT statement that are not returned by the second SELECT statement.

Each…

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