My First Technical Job – T-SQL Tuesday #150
I’m late to the party on May’s T-SQL Tuesday, but thought it was an interesting enough topic to be worth a belated blog post. It’s about first technical jobs...
2022-06-05
33 reads
Sqlrider - Speed enthusiast
Upgrade Strategies – T-SQL Tuesday #147
This month’s T-SQL Tuesday is about how we look at SQL Server upgrades, hosted by Steve Jones. My experience of SQL upgrades is that they tend to be largely...
2022-02-08
5 reads
A Hard Drive Retrospective – SQL Server Edition
Sometimes it’s good to look back and appreciate what we have and how far we’ve come. This applies to many things, but today I’m talking about the humble hard...
2022-02-18 (first published: 2022-02-06)
552 reads
Estimating Nonclustered Index Size in SQL Server (Powershell)
I recently encountered a requirement to estimate the size of (a lot of) nonclustered indexes on some very large tables due to not having a test box to create...
2021-08-13 (first published: 2021-08-01)
443 reads
Estimating Nonclustered Index Size in SQL Server (Powershell)
I recently encountered a requirement to estimate the size of (a lot of) nonclustered indexes on some very large tables due to not having a test box to create...
2021-08-01
6 reads
Nonclustered index leaf records always contain a null bitmap – since SQL 2012
While testing a script that involved calculating index record size recently I was getting some confusing results depending on server version, and after some digging it appears there was...
2021-07-28
61 reads
Nonclustered index leaf records always contain a null bitmap – since SQL 2012
While testing a script that involved calculating index record size recently I was getting some confusing results depending on server version, and after some digging it appears there was...
2021-07-28
4 reads
Automating AlwaysOn Availability Group Failover for SSISDB 2012/2014
Hopefully not many people are still configuring SSIS instances on SQL 2012 or 2014 – especially HA instances – but if you are, this post is for you. If...
2021-05-28
105 reads
Automating AlwaysOn Availability Group Failover for SSISDB 2012/2014
Hopefully not many people are still configuring SSIS instances on SQL 2012 or 2014 – especially HA instances – but if you are, this post is for you. If...
2021-05-28
5 reads
A Very Simple Blocking Alert
Blocking in SQL Server can be good – after all, it’s one of the ways consistency is guaranteed – we usually don’t want data written to by two processes...
2021-05-24 (first published: 2021-05-13)
710 reads
Blogs
Copying an Azure SQL database between two Azure SQL Instances in two different subscriptions.
I recently had to copy an Azure SQL database (SQL db) from one subscription...
A field note: AI Ambition vs. Operational Reality in 2025
Ivan Jelić, Group CEO at Joyful Craftsmen, reflects on what separates AI success from...
Redefining Tech Leadership in the Age of Microsoft AI
By Chris Yates
AI is no longer a niche capability – it is a leadership catalyst. As...
Forums
How a Legacy Logic Choked SQL Server in a 30-Year-Old Factory
Comments posted to this topic are about the item How a Legacy Logic Choked...
SQL Server Columnstore Index Fragmentation
Comments posted to this topic are about the item SQL Server Columnstore Index Fragmentation
do i lose "what this object depends on" etc when moving sprocs to etl server
Hi i was surprised to see the approach my coworkers used to sunset talend...
Question of the Day
SQL Server Columnstore Index Fragmentation
The columnstore index is absolutely different than the traditional rowstore b-tree index. Because of this, it doesn't suffer from the same kind of fragmentation across pages as the b-tree index. Yet, it does suffer from a type of fragmentation brought about by an excess of deleted rows in a rowgroup and a lack of compression of storage because more things are in the delta store. While b-tree indexes use dm_db_index_physical_stats to show fragmentation, which system tables or DMVs can be used in SQL Server (prior to SQL Server 2025) to determine columnstore fragmentation?
See possible answers