Do you use T-SQL debugging?
T-SQL debugging is not 100% in SQL Server. It has few bad drawbacks starting from difficulties when setting it up...
2011-07-13
1,210 reads
T-SQL debugging is not 100% in SQL Server. It has few bad drawbacks starting from difficulties when setting it up...
2011-07-13
1,210 reads
I was facing quite well-known issue today – I had to develop logic of duplicating (versioning) parent-child records. Because I was...
2011-07-12
2,059 reads
While I was reading Martin Catherall’s post about Selecting from a table with no rows returned I remembered TABLESAMPLE function...
2011-07-11
1,385 reads
I continued to check SQL Server 2011 “Denali” for few things I dislike on 2008 R2 and tried to find...
2011-07-11
609 reads
On my current project, I am dealing with date intervals in T-SQL very heavily. I’ve hit interesting issue recently – how...
2011-07-08
2,145 reads
I’ve received interesting question/requirement few days ago:
“… When viewing a query plan graphically, we usually have to hunt for the...
2011-07-08
1,663 reads
My wife and kids are leaving for holiday (without me). Bad thing is that I will miss them, good thing...
2011-07-07
1,288 reads
I wrote about some skeletons in the Denali’s closet here. Let’s also put some good on the table. Very handy...
2011-07-06
1,199 reads
I’ve started to play little bit with SQL Server 2011 CTP Denali to find out whether some open wounds were...
2011-07-06
458 reads
I’ve faced pretty common situation recently – you need to work with huge data during development/testing. It’s good if you have...
2011-07-05
2,537 reads
By Arun Sirpal
The Business Critical tier of Azure SQL Managed Instance offers the read-scale out feature...
I recently had to copy an Azure SQL database (SQL db) from one subscription...
Ivan Jelić, Group CEO at Joyful Craftsmen, reflects on what separates AI success from...
Comments posted to this topic are about the item How a Legacy Logic Choked...
Comments posted to this topic are about the item SQL Server Columnstore Index Fragmentation
Hi i was surprised to see the approach my coworkers used to sunset talend...
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?
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