Force a plan with Query Store when a query turns slow after a plan change. This post builds a regression, finds both plans in Query Store, forces the good one, measures what forcing costs and shows when to unforce.
SQL Server emergency? Email pinal@sqlauthority.com with URGENT in the subject line.
Learning SQL Server on a Budget
Learning SQL Server on a budget is possible with free development editions, official documentation, samples, and community practice.
SQL SERVER – master Database Log File Grew Too Big
A reader found the master database log file grew very large even in simple recovery mode. I share the full email and ask what you would suggest.
SQL SERVER – Get File Statistics Using fn_virtualfilestats
Which MDF or NDF file is the busiest? This query uses fn_virtualfilestats to show reads, writes, IO stalls and size for every database file.
SQL SERVER – DMV – sys.dm_exec_query_optimizer_info – Statistics of Optimizer
The DMV sys.dm_exec_query_optimizer_info keeps statistics of optimizer activity. My simple query shows optimizations, elapsed time, final cost and more.
Striped Backups: Writing One Backup to Several Files
Use striped backups across several files, inspect media families, restore every stripe, and test resource settings on your own server.
SQL SERVER – Copy Statistics from One Server to Another Server
Without the client’s data, every query ran in zero milliseconds. Here is how I copy statistics from one server to another to tune with only the schema.
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