Setting the Sample Rate for Auto Stats updates
SQL Server functionality can move on pretty quickly sometimes, and it’s not always all about the big features but the...
2017-09-12
2,174 reads
Matthew McGiffen DBA
Viewing the Statistics Objects Used to Create an Execution Plan
A while ago now I was running some Performance Tuning workshops and was asked how you can find out which Statistics...
2017-09-01
408 reads
SQL Puzzle 3: Knights and Queens
I thought I’d do another chess puzzle this month. This one is a variant on the Eight Queens problem:
SQL Puzzle...
2019-04-26 (first published: 2017-08-22)
2,323 reads
Automatic Sample Sizes for Statistics Updates
I mentioned in my previous post about manually updating statistics that you can specify whether they’re updated using a full...
2019-04-26 (first published: 2017-08-15)
1,482 reads
How to be a bad interviewer
In the monthly SQL blogging party that is T-SQL Tuesday (brainchild of Adam Machanic), Kendra Little has invited us this...
2017-08-08
1,421 reads
Manually updating Statistics
Even though SQL Server automatically updates statistics in the background for you, you may find there are times when you...
2017-08-01
2,428 reads
Statistics and the Ascending Key Problem
I’ve mentioned previously how not having up to date statistics can cause problems in query performance. This post looks at...
2019-04-26 (first published: 2017-07-25)
7,564 reads
SQL Server Agent and Daylight Saving time
There was a bit of chat today on the SQL Community slack about UTC and Daylight Saving Time. It reminded...
2019-04-26 (first published: 2017-07-19)
2,545 reads
SQL Puzzle 2: Eight Queens
This puzzle was first proposed in 1848 by a composer of chess puzzles called Max Bezzel and has since spawned...
2019-04-26 (first published: 2017-07-19)
2,199 reads
Think twice before using table variables
T-SQL Tuesday
For T-SQL Tuesday this month Raul Gonzalez has asked us all to blog about lessons learnt the hard way:
http://www.sqldoubleg.com/2017/07/03/tsql2sday-92-lessons-learned-the-hard-way/
My...
2019-04-26 (first published: 2017-07-11)
8,922 reads
Blogs
Fabric Mirroring doesn’t start copying Rows
A short blog post about an issue with Fabric Mirroring (with Azure SQL DB...
JSON_OBJECTAGG is an Aggregate: #SQLNewBlogger
By Steve Jones
I wrote an article recently on the JSON_OBJECTAGG function, but neglected to include an...
Cultural Change: Fostering a Cost-Aware Culture in Your Organisation
By HeyMo0sh
After working deep in cloud operations, I’ve learned that FinOps isn’t really about dashboards...
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Designing Database Changes Before Deployment: Level 1 of the Stairway to Reliable Database Deployments
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Question of the Day
Creating a JSON Document I
I want to create a JSON document that contains data from this table:
TeamID TeamName City YearEstablished 1 Cowboys Dallas 1960 2 Eagles Philadelphia 1933If I run this code, what is returned?
SELECT json_objectagg('Team' : TeamName)
FROM dbo.NFLTeams;
See possible answers