To get STATISTICS TIME and IO for every query, tick two boxes in the SSMS options once instead of typing SET STATISTICS in each window. This post builds a small demo, reads the output line by line, shows that a SELECT and an UPDATE both report their cost, and explains which windows the option affects.
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Procedure Recompilation: Force a New Plan in SQL Server
Procedure recompilation builds a new plan without changing the procedure. A tested demo compares EXEC with WITH RECOMPILE and sp_recompile on a skewed table, with 100,089 reads on a stale plan and 348 on a fresh one. It also shows that sp_recompile removes every cached plan of the procedure.
Row Mode vs Batch Mode: Measuring the Speed Difference
A fair test of row mode vs batch mode changes only the execution mode. This post uses a query hint to force row mode at the same compatibility level, checks that both modes return the same rows, and times five runs of each on a three million row table. It also shows a query where batch mode gains nothing.
Finding Regressed Queries in Query Store After a Deployment
Find regressed queries in Query Store using weighted before-and-after duration and CPU, then compare plans and changed procedure text.
Granting Read Access to One Schema With GRANT SELECT ON SCHEMA
Use GRANT SELECT ON SCHEMA for focused read access, test a loginless user, and check ownership chains and table-level DENY behavior.
Batch Mode on Rowstore: A Simple Example in SQL Server
Batch mode on rowstore lets SQL Server process rows in groups, even when the table has no columnstore index. This post builds a million row table, reads the execution mode of each plan operator, and flips four switches to show when you get batch mode and when you don’t. It also answers why a plan can stay in row mode.
How to Determine Read Intensive and Write Intensive Tables in SQL Server? – Interview Question of the Week #251
Question: How to Determine Read Intensive and Write Intensive Tables in SQL Server?
Answer: The script is very simple and lets us see in the blog.
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