T-SQL Tuesday Retrospective #004: I/O
Mike Walsh invited us on March 1st 2010 to write about I/O. This abbreviation stands for Input / Output, and is often used as shorthand for persisted storage. Given...
2020-11-11
24 reads
Born SQL with Randolph West
The rule of three, SQL Server on Linux edition
When it comes to Microsoft products, the rule of three — at least as far as I’m concerned — is where you can accomplish the same task in three...
2020-11-10
84 reads
T-SQL Tuesday Retrospective #003: Relationships
In my quest to respond to every T-SQL Tuesday since the dawn of the end of 2009, it was only a matter of time before Rob Farley’s name came...
2020-11-04
31 reads
T-SQL Tuesday Retrospective #002: A Puzzling Situation
For the second T-SQL Tuesday ever — again, hosted by Adam Machanic — we were asked one of three options, and I elected to go with the first one:...
2020-11-02 (first published: 2020-10-28)
324 reads
The T-SQL Tuesday Corollary
T-SQL Tuesday is a fantastic series of blog posts derived from over 130 topics over the past 11 years, inviting bloggers to share their thoughts on a particular theme...
2020-10-21
29 reads
A more considered approach to email signatures
This — like last week’s post — is not about SQL Server or Azure SQL Database. In a way, it hearkens back to a post I wrote a few years...
2020-10-14
40 reads
Read the error message
This post is brought to you — indirectly — from a boss I loved working for, on a project which almost killed me, at a company which I had...
2020-10-07
445 reads
How SQL Server stores data types: sql_variant
This post looks at a curious data type that isn’t really a data type. Instead, sql_variant tries to be all things to all people. As with most things in...
2020-09-30
236 reads
A new malware attack on SQL Server
Tencent Security has released a report (written in Chinese) describing a new malware attack by the name of “MrbMiner” on SQL Server instances exposed to the Internet with passwords that can...
2020-09-23
395 reads
If not me, then who?
[Content Warning: this post contains references to subjects that may trigger a trauma response. Read with caution.] This is not a technical post. I was going to write about...
2020-09-16
59 reads
Blogs
Keeping Track of my ConEmu CLIs
By Steve Jones
I use ConEmu for my terminal interface. I’m still on Windows 10 at home,...
10 Decisions to Make Before You Create A Fabric Workspace
Creating a Fabric workspace takes about 30 seconds. Restructuring workspaces after people have built...
Flyway Tips: Object History
By Steve Jones
It’s a small change, but a handy one. Flyway Desktop (FWD) now includes the...
Forums
Adding new column with DEFAULT II
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Advanced Deployment Scenarios: Stairway to Reliable Database Deployments Level 7
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You Need a DBA Pipeline
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Question of the Day
Adding new column with DEFAULT II
Which number did the two COUNT(*) return:
DROP TABLE IF EXISTS #tmp CREATE TABLE #tmp (id INT NOT NULL) INSERT INTO #tmp (id) SELECT gs.value FROM GENERATE_SERIES(1, 5) AS gs ALTER TABLE #tmp ADD my_value INT NOT NULL CONSTRAINT df_tmp_my_value DEFAULT 1 SELECT COUNT(*) FROM #tmp AS t WHERE my_value = 1 ALTER TABLE #tmp DROP CONSTRAINT df_tmp_my_value ALTER TABLE #tmp ADD CONSTRAINT df_tmp_my_value DEFAULT 2 FOR my_value SELECT COUNT(*) FROM #tmp AS t WHERE my_value = 1See possible answers