How to Measure IO Latency for Database Files in SQL Server
In order to get information about the amounts of PHYSICAL reads we perform on database files, SQL Server exposes a...
2015-04-08
1,356 reads
Can Log Shipping Work Without Shipping the Log?
When you configure log shipping, there are 4 SQL Server Agent jobs that are set up:
Backup: Performs a backup log...
2015-04-02 (first published: 2015-03-30)
6,888 reads
SQLRally and SQLBits Slides and Demos
It’s been a great a busy week.
On Wednesday, I presented my session, “Query Progress Tracking in SQL Server” at SQLRally...
2015-03-06
598 reads
How to Fix Latch Problems when Working with Ascending Keys in SQL Server
Traditionally, we want our Clustered Index to have the following attributes:
Narrow: So that our clustered index and the non-clustered indexes that point...
2015-03-03
663 reads
Speaking at SQLBits and SQLRally
Next week, I’m going to visit London and Copenhagen for SQLBits and SQLRally Nordic. It’s going to be intense and...
2015-02-24
454 reads
The Data Loading Performance Presentation
This Monday, at SQLSaturday Israel, I presented my new session, “The Data Loading Performance Presentation”.
I worked on the session a...
2015-01-21
549 reads
What to Expect When Transitioning from DBA to Consultant
Last week, Boris Hristov (b|t), the organizer of #SQLHangout, invited William Durkin (b|t) and me to a SQL Hangout about transitioning...
2015-01-15
539 reads
Things I Learned in 2014
2015 is here!
Last year I wrote about what I had learned in 2013, and I try to make it a...
2015-01-06
753 reads
Rebuilding and Reorganizing Clustered Columnstore Indexes
Clustered Columnstore Indexes, as well as “regular” indexes, support the Rebuild and Reorganize operations. However, the meaning of those operations...
2014-12-16 (first published: 2014-12-11)
6,706 reads
Tracking Progress of SQL Server Index Builds and Rebuilds
Let’s say you build or rebuild an index in SQL Server. Your users and boss are anxious to know when...
2014-11-11 (first published: 2014-11-06)
8,331 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
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...
Show/Hide number of rows in table
We have a report that has multiple tables that list the top 15 performers...
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