T-SQL

T-SQL (Transact-SQL) is a proprietary procedural extension to SQL (Structured Query Language) developed by Microsoft and Sybase, primarily used with Microsoft SQL Server and Azure SQL Database. It adds programming constructs like variables, loops, error handling, and stored procedures to standard SQL, enabling complex data manipulation, business logic implementation, and database administration tasks. T-SQL is essential for writing queries, managing data, and automating processes within SQL Server environments.

Also known as: Transact-SQL, TSQL, T SQL, Microsoft SQL, SQL Server SQL

Why learn T-SQL?

Developers should learn T-SQL when working with Microsoft SQL Server or Azure SQL Database to build robust database applications, as it allows for efficient data querying, transaction control, and performance optimization. It is particularly useful for creating stored procedures, triggers, and functions to enforce business rules, handle complex data transformations, and improve database security and maintainability in enterprise systems.

Learning Resources

• docs: Microsoft T-SQL Documentation
• tutorial: W3Schools T-SQL Tutorial
• book: T-SQL Fundamentals by Itzik Ben-Gan (Book)
• course: T-SQL Course on Udemy