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.
Common Table Expression Misunderstandings
I frequently use Common Table Expressions (CTEs) when I demo windowing functions and get questions about them. Windowing functions are limited to the SELECT and ORDER BY clause which means that you can’t filter or group on them directly. Using a CTE is one way to separate the logic of the query into multiple steps […]
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.
Stairway to SQL Server Extended Events Level 3: Working with the Extended Events UI
In the next installment of our stairway to Extended Events, we delve into the Live Data and Target Data Viewers.
What's a Lot of Money?
Handling a budget can be an interesting experience for many technical professionals. Today Steve wonders if you treat this differently than your budget at home.
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.
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.
Query Optimizer Suggests Wrong Index and Query Plan -- Why?
A good example where the Query optimizer picks the wrong query plan and suggested index.
UX Matters
User interface is a part of software development that many technical people pay little attention to during the process of building something. However, it can be a problem for your customers.
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.
Blogs
Azure SQL offerings
By James Serra
There are three Azure SQL products with so many different deployment options, service tiers,...
T-SQL Tuesday #183 Roundup
By Steve Jones
I hosted this month’s T-SQL Tuesday party with my invitation asking about tracking permissions....
A Little Brainstorming with an AI
By Steve Jones
I was asked to do some a little thinking and brainstorming recently. Rather than...
Forums
MEMORYBROKER_FOR_RESERVE experience
Hi, Does anyone have experience with MEMORYBROKER_FOR_RESERVE ? when suddenly there is somehow constantly...
Moving Database Files
I just learned that my database was created on my C:\ drive in the...
Migrate MSSQL to MYSQL - Different Servers
I am needing to migrate a MSSQL db to MySQL, on a different server...
Question of the Day
Mixed Backups
I have a complex database with a few filegroups and files. Can I run a backup command like this? (assume file/filegroup names are valid).
BACKUP DATABASE [complex]
FILE = N'thirdone'
, FILE = N'thirdtwo'
, FILEGROUP = N'second'
TO DISK = N'C:\Program Files\Microsoft SQL Server\MSSQL16.SQL2022\MSSQL\Backup\complex.bak'
WITH NOFORMAT, NOINIT, NAME = N'complex-Full Database Backup', SKIP, NOREWIND, NOUNLOAD, STATS = 10
GO
See possible answers