SQL Declare Variable Code Examples
This tutorial will discuss using variables with SQL DECLARE along with various examples.
2025-11-26
Additional Articles
The Version Store Won’t Clear If ANY Database Has Open Transactions.
Short story: what the title says.
2025-11-24
JSON Data Extract from SQL Server 2025
JSON is a complex data type used for representing objects with various properties. With JSON you follow the key-value pattern where the key is a string and the value can be of different data types. What are some common ways to work with JSON in SQL Server?
2025-11-21
How to Build an AI-Powered T-SQL Assistant with Python & SQL Server
If you’re a SQL Server DBA or developer looking to harness AI for your everyday scripting workflows, this article will walk you through building an AI-powered T-SQL assistant using Python and SQL Server.
2025-11-19
SQL ConstantCare® Population Report: Fall 2025
In this quarter’s update of our SQL ConstantCare® population report, showing how quickly (or slowly) folks adopt new versions of SQL Server, the data is very similar to last quarter
2025-11-17
IoT Meets OLTP: How to Handle Backfilling Challenges in Real-Time Systems
This is the true story of a 64-core SQL Server brought down by poor assumptions about its data. A clustered index designed for neat, sequential IoT inserts was overwhelmed when the real readings arrived late, out of order, and in bulk. The same risk lurks in any high-write system with unpredictable insert patterns. This article shows what can go wrong and how to avoid it.
2025-11-14
JSON_CONTAINS Function in SQL Server 2025
I have data coming into my SQL Server database as JSON. Before I start parsing it which is quite intensive, I need to check if some values are present in the JSON. Is there a function I can use to do this? Let’s see what the new JSON_CONTAINS function in SQL Server 2025 can do.
2025-11-12
Unlocking the Power of FULL OUTER JOIN in SQL: Performance, Use Cases & Examples
Discover how the FULL OUTER JOIN in SQL can simplify queries, improve performance, and solve real-world data problems
2025-11-10
SQL Server CROSS APPLY and OUTER APPLY Helpful Examples
Microsoft introduced the APPLY operator in SQL Server 2005. Similar to a JOIN, it allows correlation between two table expressions. The key difference between the JOIN and APPLY operators is when you have a table-valued expression on the right side and want to evaluate it for each row from the left table expression. Since they produce similar results, when do you choose an APPLY versus a JOIN?
2025-11-07
Power BI TMDL View: Benefits, Security Risks & Best Practices
The Tabular Model Definition Language (TMDL) provides a simpler way of defining Power BI Semantic Models. Unlike the JSON-based Tabular Model Scripting Language (TMSL), TMDL uses a more accessible tab-based format for specifying DAX measures, relationships, and Power Query code.
2025-11-05
Blogs
Vibe Coding a Login Tracking System
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A customer was asking about tracking logins and logouts in Redgate Monitor. We don’t...
4 CPE Opportunity (Virtual) for Charity
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Every year, the South Carolina State Internal Auditors Association and the South Carolina Midlands...
Data Céilí 2026 Call for Speakers!
Data Céilí 2026 Call for Speakers is now live! Data Céilí (pronounced kay-lee), is...
Forums
Intermittent Service Freezes and "State 23" Authentication Failure
Environment: SQL Server: 2019 Enterprise (15.0.4430.1) OS: Windows Server 2022 Standard (Build 20348) Virtualization:...
SQL Server audit with windows ad group
I am trying to create a filter on a SQL Server audit to capture...
Deadlock graph anomaly
I've come across what appears to be a strange deadlock anomaly. As seen in...
Question of the Day
Deprecated Feature Tracking
From T-SQL, without requiring an XEvent session, can I tell which deprecated features are being used on my instance?
See possible answers