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Stop Doing That! 5 Common T-SQL Anti-Patterns

William Wolf
70
Application & Database Development
Beginner
There are several programming design patterns that work great in object oriented code but do not scale inside SQL Server. Things like Scalar-Value functions, Unions, CTEs, and row by row processing can make for more work then you would expect. In this session, we will focus on several anti-patterns like these and show how to rework them to improve scale in the database engine. By the end of the session, you will be able to quickly identify these common anti-patterns and analyze their sometimes unclear cost to the engine. Heading back to the office, you’ll be able to identify pain points in your longest running queries from a T-SQL perspective and become a code tuning rockstar!
Basic understanding of T-SQL and T-SQL programmatic objects. General understanding of programmatic structures

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