How many pending IO requests are there for each MDF and LDF file? My handy script joins sys.dm_io_pending_io_requests with virtual file stats.
SQL Server emergency? Email pinal@sqlauthority.com with URGENT in the subject line.
LocalDB: SQL Server on a Developer’s Laptop
LocalDB runs SQL Server Express engine features in a developer-friendly local process; learn how to start, connect, and recognize its limits.
SQL SERVER – Finding Latch Statistics
Which latches are waiting and for how long? The DMV sys.dm_os_latch_stats lets you find latch statistics with one simple query ordered by wait time.
geometry STNumPoints: Closing Coordinates Count Again
geometry STNumPoints counts coordinates in the spatial description. A square ring contains its closing coordinate as well as its four distinct corners.
SQLAuthority News – Stay Connected and Social Media
I finally got my faith back in social media. Here are the changes I made on Twitter, LinkedIn and Facebook to stop wasting time on the same updates.
SQL SERVER – Difference between COUNT(DISTINCT) vs COUNT(ALL)
What is the difference between COUNT(DISTINCT) and COUNT(ALL)? A student asked me at a college session, and one quick script made the answer clear.
geometry STGeometryType: Type Names Say More Than Dimension
geometry STGeometryType identifies the represented shape type, which carries more information than its dimension. I compare single and multiple shapes in one small query. Equal dimensions do not mean that their structures are interchangeable.
SQL Server slow? Let's fix it together in about four hours.
In my Comprehensive Database Performance Health Check, you share your screen, I guide you, and we fix your biggest performance troublemakers. No passwords. No remote access.
You keep every script, and the know-how to fix it yourself next time.
Want your whole team to learn it?
My Practical Workshop has no PowerPoint, just live demos. My AI Enablement Workshop shows your team where AI saves hours, and where it quietly costs them.
Over 400 customers have worked with me this way, and not one shared a password. See all consulting options.
Who We Are
Pinal Dave is an SQL Server Performance Tuning Expert and independent consultant with over 24 years of hands-on experience. He holds a Masters of Science degree and numerous database certifications.
Pinal has authored 19 books and 125 Pluralsight courses. To freely share his knowledge and help others build their expertise, Pinal has also written more than 5,800 database tech articles on his blog at https://blog.sqlauthority.com.
Pinal is also a CrossFit Level 1 Trainer (CF-L1) and CrossFit Level 2 Trainer (CF-L2).
Nupur Dave is a social media enthusiast and an independent consultant. She primarily focuses on the database domain, helping clients build short and long-term multi-channel campaigns to drive leads for their sales pipeline.
Shaivi Pinalkumar Dave is a book author and a women’s artistic gymnast.

