sqldf in R Example for SQL Server
R has a package called sqldf that allows developers to manipulate data inside a dataframe in the same way a SQL developer queries a SQL table which we will cover with examples in this article.
2021-03-01
Additional Articles
Customizing Database Deployments using Flyway Callbacks and Placeholders
How to customize a database deployment process using Flyway, demonstrating how to incorporate tasks such stamping a version number into the latest database build, or writing to the SQL Server log.
2021-02-26
Partitioned Tables Cause Longer Plan Compilation Times
Folks sometimes ask, “When a table has more indexes, and SQL Server has more decisions to make, does that slow down execution plan generation?”. Brent Ozar talks through his response in this article.
2021-02-26
Ten tips for building a collaborative DevOps culture
There is more to DevOps than tools and automation. In this article, Robert Sheldon explains how to create a DevOps culture based on collaboration.
2021-02-25
Comparing and Syncing Data using SQL Data Compare Command Line
Robert Sheldon demonstrates how to start automating data comparisons between two databases, from the Windows command line or PowerShell. With a single command, you can easily compare and sync data such as test data sets, or static data used for reference or lookup purposes.
2021-02-24
Learning SQL Server
Learn about the core SQL Server concepts to build your skill set including the architecture, database design, development, administration and more.
2021-02-24
DBA in training: SQL Server under the hood
In this article of the series, Pamela Mooney explains the architecture of SQL Server under the hood, including some query anti-patterns to avoid.
2021-02-23
Resolve Git Merge Conflict for SSIS Projects
When working on an SSIS project with multiple developers, a merge conflict can occur in the git repository. In this tip we'll show you how to resolve this type of conflict and provide alternative options.
2021-02-22
Securing SQL Server with DoD guidelines
Making sure your SQL Servers are secured against malicious users is difficult. The United States Defense Information Systems Agency (DISA) publishes a set of guidelines for organizations securing different pieces of software that connect to the US Department of Defense’s networks (DoD). Whether you’re working with the DoD or not, these Security Technical Implementation Guides (STIGs) are a good resource to help you understand potential security vulnerabilities and mitigate them.
2021-02-22
Mastering TempDB: The basics
Mastering TempDB is a critical skills for SQL Server DBAs. In this article, Monica Rathbun explains the basics of TempDB including configuration.
2021-02-19
Blogs
AI: Blog a Day – Day 7: Vector and Vector Databases
By Vinay Thakur
Continuing from Day 6 we learned Embeddings, Semantic Search and Checks, on Day 7...
AI: Blog a Day – Day 6: Embeddings – How AI Understands
By Vinay Thakur
Continuing from Day 5 where we covered notebooks, HuggingFace and fine tuning AI now...
The Book of Redgate: Mistakes
By Steve Jones
This is kind of a funny page to look at. The next page has...
Forums
Why End-User Testing Is Even More Important with AI
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Dynamic Unpivot
I have a table I didn't design that has tons of repeating groups in...
Writing as an Art and a Job
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Question of the Day
String Similarity II
What is the range for the result from the EDIT_DISTANCE_SIMILARITY() function in SQL Server 2025?
See possible answers