SQL Server – No New Index, No Schema Change ....Just pure engine optimization! part 5!
Part 5 – How to Force Batch Mode on Rowstore When SQL Server Doesn’t Choose It Previous article: Part 4 – No New Index, No Schema Change Hi guys, Welcome back to the series where we improve performance without creating new indexes, without changing the schema, and without redesigning the database. Just pure engine optimization. Grab your execution plans, turn on Actual Execution Plan, and let’s dive into Batch Mode on Rowstore again. Happy reading… and may your queries always run in parallel ⚡ Introduction In Part 4, we saw how Batch Mode on Rowstore can dramatically improve query performance without adding new indexes or changing the schema. SQL Server does not always choose Batch Mode automatically , even when the query looks like a perfect candidate. When SQL Server decides to use Batch Mode How to force it with USE HINT('ForceBatchMode') When Batch Mode can hurt performance Row Mode vs Batch Mode comparison Why This Top...