Finding single use plans in the plan cache
A single use plan is an entry in the SQL Server plan cache that was only used once. When a...
2019-03-07 (first published: 2019-02-19)
3,861 reads
Arthur's Blog
Partitioning 5: The extra partition
So, we’ve set up a table with table partitioning on the RIGHT for CreationDate. We defined 11 partitions, and in...
2019-02-18
161 reads
Partitioning 4: Finding partitioning in DMVs and Object Explorer
Happy Friday! Today’s post will be light on the performance side and instead, I’m going to talk about how to...
2019-02-15
1,733 reads
Partitioning 3: Beyond just partition elimination
In Partitioning 2, I showed how to analyze which partitions were accessed by our Index Seek. However, we were searching...
2019-03-04 (first published: 2019-02-14)
1,861 reads
Partitioning 2: Getting and measuring partition elimination
In Partitioning 1, my query searched through all 1-12 partitions. Let’s see if we can reduce that number.
Adding the partitioning...
2019-02-13
1,629 reads
T-SQL Tuesday #111 – Why I blog
This month’s T-SQL Tuesday is hosted by Andy Leonard at andyleonard.blog . Andy asks us, what is your “Why?”
So what is...
2019-02-12
685 reads
Partitioning 1: Non-partition aligned queries
Here’s my take on partitioning. I’ll be focusing on getting queries to perform on partitioned tables, and not on partition...
2019-02-27 (first published: 2019-02-11)
2,484 reads
Performance on readable replicas in Availability Groups
I apologize in advance if I mess up the terminology.
I’ve worked with a moderate read workload on a readable replica...
2019-02-08
771 reads
Dynamic Data Masking in the execution plan
I think Dynamic Data Masking is pretty cool. The idea is basically to provide a mask for certain users when...
2019-02-07
813 reads
Bad indexing can show up in wait statistics
At first, this statement might sound a bit confusing. Usually, we expect wait statistics to show us what a query...
2019-02-06
216 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