SQL Server Certification

Galaxy Glossary

What are the different paths and requirements for obtaining a SQL Server certification?

SQL Server certification validates expertise in using SQL Server. It's a valuable credential for database professionals, demonstrating proficiency in various aspects of database administration and development. Different certifications cater to different roles and skill levels.

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Description

SQL Server certification is a series of exams offered by Microsoft to validate expertise in using SQL Server. These certifications cover a wide range of skills, from basic database administration to advanced development and design. The certifications are structured in a way that builds upon each other, allowing professionals to progress from foundational knowledge to specialized expertise. Each certification exam tests candidates' knowledge and practical skills in areas like database design, query optimization, security, and performance tuning. Obtaining a SQL Server certification can significantly enhance your career prospects in the database field, demonstrating your commitment to professional development and your ability to handle complex database tasks. The certification process typically involves passing one or more exams, demonstrating proficiency in specific areas of SQL Server.

Why SQL Server Certification is important

SQL Server certification demonstrates a high level of proficiency in SQL Server technologies. It enhances career prospects, increases earning potential, and validates your skills in database administration and development. It also shows a commitment to professional development and staying current with industry best practices.

Example Usage


-- Example table
CREATE TABLE Products (
    ProductID INT PRIMARY KEY,
    Price DECIMAL(10, 2)
);

-- Insert some data
INSERT INTO Products (ProductID, Price) VALUES
(1, 9.999),
(2, 15.50),
(3, 23.456);

-- Query to round prices to two decimal places
SELECT
    ProductID,
    Price,
    ROUND(Price, 2) AS RoundedPrice
FROM
    Products;

Common Mistakes

Want to learn about other SQL terms?

With Cte In SQL

Common Table Expressions (CTEs) are temporary, named result sets defined within a single SQL statement. They enhance query readability and reusability by breaking down complex queries into smaller, manageable parts.

Where Vs Having SQL

WHERE and HAVING are both used for filtering data in SQL, but they operate on different levels. WHERE filters rows before any aggregation, while HAVING filters groups after aggregation.

Windows Functions In SQL

Window functions in SQL perform calculations over a set of rows related to the current row, unlike aggregate functions which summarize data across all rows. They are powerful tools for analyzing data within a specific context.

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