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
Articles
Monitoring the Number of Connections
Monitoring your SQL Server is important. This article examines one of the metrics you might want to keep an eye on.
2021-02-26 (first published: 2019-02-26)
46,516 reads
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
Query Optimizer Suggests Wrong Index and Query Plan -- Why?
A good example where the Query optimizer picks the wrong query plan and suggested index.
2021-02-25
5,077 reads
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
Discussion on Normalization and Database Design Concepts
Introduction Relational database design helps to create a set of relations and tables, which are connected with each other through some defined relationships. The main purpose of relational database design is to preserve the information and minimize data redundancy. We need to follow some design guidelines for relational schemas to maintain the quality of the […]
2021-02-23
5,316 reads
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
Blogs
Claude AI Convinced Me Not to Build an iPad App
By Steve Jones
I coach volleyball and I do a lot of stat stuff on paper. I...
A New Word: Dolorblindness
By Steve Jones
dolorblindness – n. the frustration that you’ll never be able to understand another person’s...
Claude Code Helps Analyze Test Data Manager Log Files
By Steve Jones
I had a customer ask about analyzing their Test Data Manager (TDM) usage to...
Forums
Data Warehouse Toolkit meets Star Schema: The Complete Reference
Is there a good syllabus for reading these two together? (Yes, it's called the...
GPX distance and time analysis in SQL Server
Comments posted to this topic are about the item GPX distance and time analysis...
The DBA is Dead; Long Live the DBA
Comments posted to this topic are about the item The DBA is Dead; Long...
Question of the Day
Changing the AG Listener
In SQL Server 2025, if I want to remove an IP from a listener, what do I do?
See possible answers