Rowstore to columnstore is a change of the clustered index, and one command works in only one case. This post builds two tables of 600,000 rows, shows the error from DROP_EXISTING on a primary key, and converts each table the working way. It compares the sizes before and after.
SQL Server emergency? Email pinal@sqlauthority.com with URGENT in the subject line.
Copy Database – SQL in Sixty Seconds #169
At that time I use this technique of copy database while keeping the database online. This method is very simple and efficient.
Read-Ahead Reads in STATISTICS IO: What They Tell You
Interpret read-ahead reads in STATISTICS IO, compare isolated cold scans and seeks, and separate prefetch from storage-wait evidence.
9 SQL SERVER Performance Tuning Tips – SQL in Sixty Seconds #168
This episode of SQL in Sixty seconds is very special as it contains 9 SQL SERVER Performance Tuning Tips. The length of the video is also longer.
EDIT_DISTANCE and JARO_WINKLER: Fuzzy String Matching in SQL Server 2025
EDIT_DISTANCE counts the single-character changes between two strings, and the JARO_WINKLER functions score how alike they look. This post tests the four preview functions on SQL Server 2025, shows the Windows collation error and its fix, and finds near-duplicate customer names.
Excel – Sum vs SubTotal – SQL in Sixty Seconds #167
Just like SQL Server, I work with MySQL, PostgreSQL, MariaDB, MongoDB, and Excel. Today we are going to see in excel which is about Sum vs SubTotal.
3 Ways to Configure MAXDOP – SQL in Sixty Seconds #166
We will see a quick SQL in Sixty Seconds video and scripts used in the video to change MAXDOP. Let us watch 3 Ways to Configure MAXDOP.
SQL Server slow? Let's fix it together in about four hours.
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You keep every script, and the know-how to fix it yourself next time.
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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.

