SQL Server 2019: Session Context & Parallel Plans
Read OriginalThis technical article examines the use of SESSION_CONTEXT and CONTEXT_INFO functions in SQL Server 2019 for access control and data filtering. It details a discovered limitation where using these functions can prevent queries from utilizing parallel execution plans, impacting performance. The author provides a practical demonstration with setup scripts and query analysis, highlighting a potential pitfall for developers implementing row-level security or similar patterns.
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