DBA in training: SQL Server high availability options
DBAs must make sure data is highly available, and there are many SQL Server high availability options. Pamela Mooney discusses those options in this article.
2021-06-07
Additional Articles
Redgate Streamed: Embracing technology trends for database success
Innovating in the database is crucial for success, and we’re seeing new trends impact the database, like cloud migration, SRE, and the growing need for big data and tools to support growing estates. On 23 June, Redgate Streamed brings you organizations who have implemented these database technology trends, including speakers from Google, Microsoft, and AWS, who will share their success stories and tips for embracing technology changes.
2021-06-07
The changing landscape of continuous database integration
Considering introducing continuous database integration? Learn the principles in this ThoughtWorks webinar hosted by Pramod Sadalage, expert in this discipline and author of several books about database refactoring and development.
2021-06-04
Using Delta Schema Evolution in Azure Databricks
In this article we explore schema evolution capabilities and limitations in Databricks with regular parquet format and explore schema evolution features and capabilities through delta format with inserts, appends, and overwrites.
2021-06-04
CTE in SQL Server Examples
In this article we cover what a Common Table Expression CTE is and how to write a CTE for doing selects, inserts, deletes, updates and more.
2021-06-02
The future of Database DevOps
Director at ThoughtWorks Pramod Sadalage explores trends such as rapid digital transformation and an ever-changing tech landscape, that'll change the way we work with databases and DevOps in the next 20 years.
2021-06-02
Managing Database Documentation during Flyway-based Development
How to create and maintain a 'data dictionary' for your databases, in JSON format, which you can then use to add and update the table descriptions, whenever you build a new version using Flyway.
2021-05-31
Oracle Sequences: RAC
Using sequences when scaling up with Oracle RAC presents more issues with contention. In this article, Jonathan Lewis explains how to avoid the problems.
2021-05-31
Constraints and declarative referential integrity
Database systems have powerful features built right in that can ensure the integrity of data. In this article, Joe Celko discusses keys and constraints.
2021-05-28
Introducing the PASS Data Community SUMMIT
Join the world’s largest gathering of data professionals at this year’s free online PASS Data Community SUMMIT. Connect and network with 1000s of your peers and learn from some of the brightest minds in the data industry. This year’s must-attend online event is completely free, so sign up now to be notified when registration opens.
2021-05-28
Blogs
Free webinar – Tackling the Gaps and Islands Problem with T-SQL Window Functions
I’m hosting a free webinar at MSSQLTips.com at the 19th of December 2024, 6PM...
Counting Groups with Window Functions: #SQLNewBlogger
By Steve Jones
I looked at row_number() in a previous post. Now I want to build on...
The query processor ran out of internal resources and could not produce a query plan – When You’ve Managed to Confuse SQL With a Crazy IN Clause.
Recently I received a cry for help over Teams. The issue was that an...
Forums
How to determine if a DB is currently being used
Hi - I'm looking for advice regarding the best & quickest way to establish...
Data cleansing/conversion tool HPE
Hello. I am looking for a tool Data cleansing/conversion, was recommended HPE any...
System views in a contained availability group
I have a query that runs in a job to check on orphaned users....
Question of the Day
The LAGging NULL
I have this data in a SQL Server 2022 table:
player yearid team HR Alex Rodriguez 2012 NYY 18 Alex Rodriguez 2013 NYY 7 Alex Rodriguez 2014 NYY NULL Alex Rodriguez 2015 NYY 12 Alex Rodriguez 2016 NYY 9If I run this code, what are the results returned in the hrgrowth column?
SELECT player , yearid , hr , hr - LAG (hr, 1, 0) IGNORE NULLS OVER (ORDER BY yearid) AS hrgrowth FROM dbo.playerstats;See possible answers