Daily Coping 12 Apr 2022
I started to add a daily coping tip to the SQLServerCentral newsletter and to the Community Circle, which is helping me deal with the issues in the world. I’m...
2022-04-12
27 reads
T-SQL Tuesday #149 – T-SQL Advice you’d give to your younger self
It’s the second Tuesday of the month, so it’s time for the T-SQL Tuesday blog party! This month’s topic is chosen by Camila Henrique (blog): what T-SQL advice would...
2022-04-12
36 reads
Query Hash and Query Plan Hash Mapping
The problem
As a fan of Dynamic Management Objects (DMOs), Query Store and Extended Events, I often work with the Query Hash and Query Plan Hash (I’ll refer to them...
2022-04-11
56 reads
Query Tuning and Easy Solutions
TLDR: There ain’t one. I was privileged last week to be able to present a couple of sessions at the SQL Server and Azure SQL Conference (great event, I...
2022-04-18 (first published: 2022-04-11)
611 reads
Setting the Container Name–#SQLNewBlogger
I had started a Stairway series on containers (which I need to get back to), and I got a question. How do we set the name of a container?...
2022-04-18 (first published: 2022-04-11)
170 reads
Daily Coping 11 Apr 2022
I started to add a daily coping tip to the SQLServerCentral newsletter and to the Community Circle, which is helping me deal with the issues in the world. I’m...
2022-04-11
15 reads
Daily Coping 8 Apr 2022
I started to add a daily coping tip to the SQLServerCentral newsletter and to the Community Circle, which is helping me deal with the issues in the world. I’m...
2022-04-08
33 reads
Speaking at SQL Saturday Jacksonville 2022
SQL Saturday is coming back to Jacksonville this May. I’m excited to go as I’ve like the city, but I’ve never been to this particular SQL Saturday. On May...
2022-04-07
23 reads
KEEP PLAN Demystified
Foreword
I was always wondering what the KEEP PLAN hint does. The documentation isn’t very specific (emphasis mine):
Forces the Query Optimizer to relax the estimated recompile threshold for a query.
In...
2022-04-07
90 reads
Daily Coping 7 Apr 2022
I started to add a daily coping tip to the SQLServerCentral newsletter and to the Community Circle, which is helping me deal with the issues in the world. I’m...
2022-04-07
28 reads
Blogs
T-SQL Tuesday #202 SQL Server Outage You’ll Never Forget: A Roundup
When I put together the invitation for T-SQL Tuesday #202, I wasn't sure what...
A Last Minute Trip to the EU
By Steve Jones
My life has some crazy travel stretches for sure. Between speaking, office visits, customer...
Part 3 of 3: Tuning DiskANN — R, Alpha, L, Beam Width, Recall and Latency
In Part 1, we saw how ‘Vamana’ represents vectors as nodes, connects them with...
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Question of the Day
ORDER BY alias
There is a table tmp_tab:
CREATE TABLE tmp_tab ( id int, val int );
INSERT INTO tmp_tab VALUES (1, 1), (2, NULL), (3, 3), (4, 4), (5, 5);You want to order the rows ids by the following expression:
ISNULL(val, id) + 1Which of the following queries produces the expected ordering and why? (Select all correct) See possible answers