Cumulative sum of previous rows
I had an update statement that took 3 minutes to run after this code change it took 6 seconds.
2015-03-27 (first published: 2014-05-08)
34,979 reads
Articles
Azure Blob Storage Part 9: Shared Access Signatures
In this article, Robin Shahan talks about security and how to control access to containers and blobs using shared access signatures (SAS) and stored access policies.
2015-03-27
7,596 reads
Self-maintaining, Contiguous Effective Dates in Temporal Tables
'Temporal' tables contain facts that are valid for a period of time. When they are used for financial information they have to be very well constrained to prevent errors getting in and causing incorrect reporting. This makes them more difficult to maintain. Is it possible to have both the stringent constraints and simple CRUD operations? Well, yes. Dwain Camps patiently explains the whole process.
2015-03-26
9,819 reads
SQL Saturday #372 - Exeter, UK
SQL Saturday, organized by SQL South West, is coming to Exeter, England on April 25. This is sure to be a special event, and as always, offers a free day of training and networking. Register while space is available.
2015-03-26
7,920 reads
Exploding the Myths of Big Data
As big data application success stories (and failures) have appeared in the news and technical publications, several myths have emerged about big data. This article explores a few of the more significant myths, and how they may negatively affect your own big data implementation.
2015-03-25
11,670 reads
Identifying Start Dates not Aligned with End Dates on a Prior Row
When effective end dates don't align properly with effective start dates for subsequent rows, what are you to do?
2015-03-24
10,661 reads
Database source control workshop, Cambridge UK
Redgate is hosting a 1 day public workshop on April 22, 2015. This workshop will teach you how to put a database in source control, deploy a database from source control, and monitor database changes across development, testing, and production environments.
2015-03-24
7,650 reads
Integrating Database Lifecycle Management into Microsoft's Application Delivery Process
In order to automate the delivery of an application together with its database, you probably just need the extra database tools that allow you to continue with your current source control system and release management system by integrating the database into it. If you're using the Microsoft stack, then Redgate's tools can help with some of the difficult database parts of the process, as Jason Crease demonstrates.
2015-03-24
8,081 reads
SQL Cop and SQLServerCentral
Steve Jones runs the SQL Cop tests against the SQLServerCentral database and looks at the results.
2015-03-23
5,485 reads
SQL Server Reporting Services Bookmarks and Document Maps
What are the SQL Server Reporting Services Document Map and Bookmark properties? How can they be used? Do they work for all rendering formats? Scott Murry answers these questions and more.
2015-03-23
8,334 reads
Blogs
Au Revoir for now
By Steve Jones
No, I’m not quitting or retiring. Just going on vacation, but I leave tonight...
The SUM of Nothing: #SQLNewBlogger
By Steve Jones
I caught this interesting item over on Pinal Dave’s blog: Eleven Interview Questions that...
Forums
Building a SQL Server Fleet Audit That Leadership Actually Reads
Comments posted to this topic are about the item Building a SQL Server Fleet...
Smart AI Agents and Data Security
Comments posted to this topic are about the item Smart AI Agents and Data...
RegEx Functions IV
Comments posted to this topic are about the item RegEx Functions IV
Question of the Day
RegEx Functions IV
I have this data in a table in a SQL Server 2025 database:
EmailAddressID EmailAddress 7 dylan0@ADVENTURE-WORKS.COM 8 Diane1@ADVENTURE-WORKS.COMIf I run this query, which row(s) are returned?
SELECT top 10 * FROM person.EmailAddress WHERE REGEXP_LIKE(EmailAddress, '^D', 'i') AND BusinessEntityID IN (7,8)See possible answers