Key Sets, or Inverted Keys - defining a key as a set of tuples
TL;DR:
I have been doing a lot of thinking about data models for the last couple of weeks. I have, just...
2017-12-19
469 reads
Login failed for 'NTAUTHORITY\ANONYMOUS LOGON' - the fix you probably haven't tried yet
Just a quick one today. TL;DR: Remove yourself from some unnecessary AD groups.
If you've ever received the message "login failed...
2017-11-24 (first published: 2017-11-12)
3,354 reads
Login failed for 'NT AUTHORITY\ANONYMOUS LOGON' - the fix you probably haven't tried yet
If you're seeing this for the second time, my apologies. I wanted to update the title but had to delete...
2017-11-13
2,806 reads
Improving instead-of-insert cardinality estimates for inserted and deleted pseudotables in SQL 2014+
Tricky triggers
In my last entry I noted that the performance of "instead-of" triggers can be tricky.
One of the reasons for...
2017-11-07
569 reads
SOA and message based integration - the challenge of bulk data changes
I'm working on problems of enterprise data integration in the role of enterprise architect, but I am and have been...
2017-11-06 (first published: 2014-11-19)
6,369 reads
An attempt at creating a "universal", set-oriented, near-real-time ODS ETL interface
Defining the Problem
Imagine I have two different systems - say, a CRM and an ERP - on different SQL Servers. Both systems...
2017-11-05
471 reads
Getting Backup File Information from a Table Valued UDF - SQLCLR to the Rescue?
Update:
After all of this SMO stuff failed (changing the permission set to unsafe got around the security exception, but instead...
2011-06-15
1,484 reads
Things That Should Be In TSQL
Relation Types
create type type_T(i int primary key clustered, j int check (j > 0)) -- relation type. Includes constraints!
create table T(type_T)
Relvar Assignment
This...
2011-06-15
955 reads
SSMSDeploy 1.5 Available: new configuration form and highly tweaked request list
SSMSDeploy version 1.5 is ready. This one has a LOT of GUI tweaks. No database changes in this one, so...
2011-01-22
959 reads
SSMSDeploy 1.1 Now Available
Fixed a couple of issues and made some GUI tweaks. Please see the download page for the latest version, and...
2011-01-20
710 reads
Blogs
Learn Better: Pause to Review More
By Brian Kelley
If you want to learn better, pause more in your learning to intentionally review.
Azure SQL Managed Instance Next-Gen: Bring on the IOPS
By John
If you’ve used Azure SQL Managed Instance General Purpose, you know the drill: to...
SQL, MDX, DAX – the languages of data
By DataOnWheels
Ramblings of a retired data architect Let me start by saying that I have...
Forums
Two foreign keys to the same table. Can't cascade deletes.
Not sure if this is really a relational theory question but it seems about...
Connecting Power BI to SSAS and effective user not working
Hi everyone, Below is a consolidated summary of what we validated Architecture & data...
High Availability setup - has anyone seen this method?
Hi all, I recently moved to a new employer who have their HA setup...
Question of the Day
Encoding URLs
I have this data in a SQL Server 2025 table:
CREATE TABLE Response ( ResponseID INT NOT NULL CONSTRAINT ResponsePK PRIMARY KEY , ResponseVal VARBINARY(5000) ) GOIf I want to get a value from this table that I can add to a URL in a browser, which of these code items produces a result I can use? See possible answers