What’s in a partition?
In my last post on partitioning I used the $Partition command in passing. I’ve been thinking it deserves a bit...
2017-05-22
502 reads
Kenneth Fisher
Partitioning on a nullable column
tl;dr; If you are SWITCHing data into a table and the partitioning column is nullable you will need to add...
2017-05-17 (first published: 2017-05-03)
1,995 reads
T-SQL FizzBuzz
I was looking around for something to write about this evening and came across one of Russ Thomas’ (b/t) old...
2017-05-17
2,860 reads
Why shouldn’t I shrink my database log file?
TL;DR: It’s pretty pointless and can cause performance issues.
Let’s start by asking why you might want to shrink your log....
2017-05-15
476 reads
Simple Security Report
Quite a while ago I created a couple of little security scripts to help me out with permissions research. Over...
2017-05-12 (first published: 2017-05-01)
2,255 reads
Dynamic SQL and the joys of QUOTENAME
I’m a big fan of dynamic SQL. In the past I’ve written a How to, a Best Practices and even...
2017-05-11
584 reads
Continuous Integration
It’s T-SQL Tuesday again! This month we are being hosted by James Anderson (b/t). Thanks James! He has asked us...
2017-05-09
413 reads
Why is a Windows authenticated login more secure than a SQL authenticated one?
I had this question come up at work the other day and while I knew it was true I wasn’t...
2017-05-08 (first published: 2017-04-26)
3,706 reads
SSMS Tips: Copy Full Path
When you right click on a tab you’ll see a number of different options. You can set up new horizontal...
2017-04-24
377 reads
When should I add an index?
We all know indexes are good and I’m hoping everyone knows you can have too many indexes. That means we...
2017-04-21 (first published: 2017-04-19)
2,838 reads
Blogs
Advice I Like: Fear and Imagination
By Steve Jones
Fear is fueled by a lack of imagination. The antidote to fear is not...
Cloud Data Driven User Group 2025 – Slides & Scripts
The slidedeck and the SQL scripts for the session Indexing for Dummies can be...
Leading Through Change: Guiding Teams in Times of Uncertainty
By Chris Yates
Change is not a disruption in technology; it is the rhythm. New frameworks appear,...
Forums
How to use data pre-computed in previous ETL SSIS Nodes?
I'm building ETL packages in SSIS. My data comes from an OLE DB Source...
Building AI Governance and Policies- First Steps
Comments posted to this topic are about the item Building AI Governance and Policies-...
Simple delete causes table scan on other tables with foreign key
Why is sql doing a full scan VS seeking on the index? I've included...
Question of the Day
Checking Identities
The DBCC CHECKIDENT command is used when working with identity values. I have a table with 10 rows in it that looks like this:
TravelLogID CityID StartDate EndDate 1 1 2025-01-11 2025-01-16 2 2 2025-01-11 2025-01-16 3 3 2025-01-11 2025-01-16 4 4 2025-01-11 2025-01-16 5 5 2025-01-11 2025-01-16 6 6 2025-01-11 2025-01-16 7 7 2025-01-11 2025-01-16 8 8 2025-01-11 2025-01-16 9 9 2025-01-11 2025-01-16 10 10 2025-01-11 2025-01-16The docs for DBCC CHECKIDENT say this if I run with only the table parameter: "If the current identity value for a table is less than the maximum identity value stored in the identity column, it is reset using the maximum value in the identity column. " I run this code:
DELETE dbo.TravelLog WHERE TravelLogID >= 9
GO
DBCC CHECKIDENT(TravelLog, RESEED)
GO
INSERT dbo.TravelLog
(
CityID,
StartDate,
EndDate
)
VALUES
(4, '2025-09-14', '2025-09-17')
GO
What is the identity value for the new row inserted by the insert statement above? See possible answers