seniorT-SQL
What is query memory grant feedback in SQL Server?
Updated May 17, 2026
Short answer
Memory grant feedback adjusts memory allocation for queries based on runtime behavior.
Deep explanation
SQL Server monitors actual memory usage during execution and adjusts future memory grants up or down. This prevents spills (under-granting) and wasted memory (over-granting). It is part of adaptive query processing and improves stability in variable workloads.
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