First Impressions
SELECT @@Version
Microsoft SQL Server “Denali” (CTP1) – 11.0.1103.9 (X64)
I’ve been playing with the CTP for a few days (with absolutely no...
2010-11-09
1,427 reads
SQL In The Wild
A Trio of Table Variables
So, it’s the second Tuesday of the month again, and it’s time for T-SQL Tuesday again. This month it’s hosted...
2010-10-12
1,262 reads
One wide index or multiple narrow indexes?
Or “If one index is good, surely many indexes (indexes? indices? indi?) will be better”
This is a question that comes...
2010-09-14
1,575 reads
Come and gone
Or “Plan cache monitoring – insert and remove”
Previously I took a look at the CacheHit and CacheMiss events to see how...
2010-08-31
1,813 reads
Hit and miss
Or “Monitoring plan cache usage”
For people interested in the details of how SQL is using and reusing execution plans, there...
2010-07-27
1,131 reads
Does a missing data file send a database suspect?
Short answer: No
I keep seeing this come up on various forums when people ask what makes a database go suspect...
2010-06-29
2,035 reads
DBA Hell
On the first day of DBA hell, the server gave to me
A database with damaged system tables and no good...
2010-06-15
963 reads
In, Exists and join – a roundup
Over the last several months I’ve had a look at IN, Exists, Join and their opposites to see how they...
2010-04-27
1,342 reads
Left outer join vs NOT EXISTS
And to wrap up the miniseries on IN, EXISTS and JOIN, a look at NOT EXISTS and LEFT OUTER JOIN...
2010-03-23
12,460 reads
The Root of all Evil
Or “Shot gun query tuning”
There have been a fair few forums questions in recent months asking for help in removing...
2010-03-11
437 reads
Blogs
AI: Blog a Day – Day 4: Transformers – Encoder, Decoder, and Attention
By Vinay Thakur
Continuing from Day 3 where we covered LLM models open/closed and their parameters, Today...
Flyway Tips: Multiple Projects
By Steve Jones
One of the nice things about Flyway Desktop is that it helps you manage...
What DevOps Look Like in Microsoft Fabric
By HeyMo0sh
Microsoft Fabric (not to be confused with the more general term “fabric” in DevOps)...
Forums
Can an Azure App Service Managed Identity be used for SQL Login?
I'm fairly certain I know the answer to this from digging into it yesterday,...
Azure Synapse database refresh
Hi Team, I am trying to refresh the Azure Synapse Dedicated pool from production...
how to write this query?
hi everyone I am not sure how to write the query that will produce...
Question of the Day
Fun with JSON I
I have some data in a table:
CREATE TABLE #test_data
(
id INT PRIMARY KEY,
name VARCHAR(100),
birth_date DATE
);
-- Step 2: Insert rows
INSERT INTO #test_data
VALUES
(1, 'Olivia', '2025-01-05'),
(2, 'Emma', '2025-03-02'),
(3, 'Liam', '2025-11-15'),
(4, 'Noah', '2025-12-22');
If I run this query, how many rows are returned?
SELECT *
FROM OPENJSON(
(
SELECT t.* FROM #test_data AS t FOR JSON PATH
)
) t; See possible answers