Author: Oleg Zhuk

Master's degree in Security of Information and Communication Systems. Researcher (information security), professional in the field of information security organization. Oleg is constantly studying new technologies and is happy to write articles on these topics for blogs, online publications, and thematic communities.

How to Read and Interpret SQL Errors

07:30 Troubleshooting Issues

Error codes in SQL are generated by the server to provide information about what has gone wrong....
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SQL OR Statement: The Basics

10:23 Database development, Statements

Now and then, you need to create a complex SQL query using multiple statements together. While these query types can be tedious to create,...
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How to Use SQL SUM Function

10:01 Database development, Statements

SQL is a powerful and widely-used programming language for data storage, retrieval, and manipulation. One of the most commonly-used...
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SQL Server ROUND() Function: What It’s For and Why Should You Care?

11:21 Database development, Statements

SQL is a programming language used to create, read, update, and delete databases. It has one of the...
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SQL AS: Usage, Examples, and How it Can Benefit You Best

16:08 Database development, Statements

What is the AS statement in SQL? The AS keyword in SQL is used to create a temporary alias for a table or column. This alias can be used...
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Oracle Live SQL: Pros and Cons, and What You Miss Out if You Don’t Try It

13:27 Code Management, Tools & technologies

Oracle Live SQL is a new feature in Oracle Database 12c that allows the developers to easily create and run SQL scripts against Oracle...
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