Finding Gaps in Sequential Data Using SQL Server
Many systems expect a sequential range of numbers for invoices, ticket numbers, and more. Learn how you can identify where you have gaps in your sequences.
2026-09-21
2,937 reads
Articles
What is cloud database vendor lock-in? The 3 types explained (and how to audit yours)
Cloud database vendor lock-in is one of the most expensive surprises in enterprise infrastructure — not because the dependency is hidden, but because most teams never quantify it before committing to a platform.
2026-09-21
Practical Reporting Queries with CROSS APPLY (Part 3)
This article continues the series on APPLY, showcasing how some practical reports can be implemented using this operator.
2026-09-18
2,644 reads
Foreign Keys and Performance in a Microsoft Fabric Warehouse
I wanted to answer a simple question: Do relationships help, hurt, or have no effect when added to tables in a Fabric warehouse?
2026-09-18
Implementing Type 4 Slowly Changing Dimensions in SQL Server
Learn about a Type 4 Slowly Changing Dimension in this article by Dinesh Asanka.
2026-09-16
3,755 reads
SQL Server login failures: how to monitor, report, and alert on them
This guide walks through how to pull login failure data using sys.xp_readerrorlog, filter it by time and error type, parse it into readable columns, aggregate repeat offenders, and automatically email a summary report — turning a passive log file into an active security and troubleshooting tool.
2026-09-16
Optional Parameter Plan Optimization in SQL Server 2025: Fixing the Kitchen-Sink Search Procedure
See how SQL Server 2025 uses Optional Parameter Plan Optimization to create separate plans for selective and unfiltered searches, how to verify the dispatcher and variants, and when dynamic SQL or recompilation is still the better choice.
2026-09-14
2,230 reads
Database Animations: What’s a Residual Predicate and Why Is It Bad?
Normally when you're looking at an execution plan, and you see an index seek followed by a key lookup, that means it's running relatively quickly.
2026-09-14
Managing Feature Flags with GET_BIT() and SET_BIT() in SQL Server
Learn how the bitwise functions SET_BIT() and GET_BIT() can be used to manage data stored inside a single column.
2026-09-11
2,221 reads
9 things I wish SQL Server had (and why they’d matter)
Anyone who’s spent years writing T-SQL has a mental list of “why doesn’t SQL Server just do this already?” moments. Here are 9 of those from Louis Davidson’s perspective – a wish list of practical, coding-oriented feature requests drawn from real-world pain points.
2026-09-11
Blogs
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Querying Multiple Tables for the Same Information
I have about 100 Tables that are all suffixed with _Modify. These tables record...
Question of the Day
Negative and Positive Numbers
If I want to know whether a number of negative, positive, or zero, what is the easiest way to get this in T-SQL?
See possible answers