SQL Server 2014 - Cardinality Estimator - Part 1
It has been a while since I blogged. Just moved to few other mediums like speaking at user group and...
2016-04-03
698 reads
SQL and SQL Only
SQL Server Statistics - Histograms
Most of us are aware of Statistics in SQL Server and its purpose. But still, just to get started, statistics...
2016-01-25 (first published: 2016-01-13)
3,205 reads
In-Memory OLTP Table Checkpoint Processes Performance Comparison
Checkpoint processes and other internal processes have undergone major changes for In Memory OLTP tables and transactions. The following article...
2015-11-18
686 reads
Hekaton Part 11 :- Finding row count in memory table
Finding a row count in a "in memory" Hekaton table can be a tricky task as the regular commands and...
2015-11-06
938 reads
Hekaton Part 10: Things Hash Indexes Can do
Hash Indexes on "In memory" tables are best suited for equality searches. Reason is obvious, as they are based on...
2015-11-02
488 reads
Hekaton Part 9: Things Hash Indexes can't do
Last few posts have explored hash indexes in depth. This one will deal with the limitations on Hash Indexes. What...
2015-10-25
401 reads
Hekaton Part 8 - Hash Collisions - Hash_Index_Stats DMV
Continuing from previous post , this post will discuss a few scenarios on hash collisions.
The following "in memory" table with a hash...
2015-10-11
593 reads
Hekaton Part 7 - Hash Collisions & Hash Buckets
As explained in the earlier post, a hash index places pointers to the rows in hash buckets, depending upon the value returned...
2015-09-15
694 reads
Hekaton Part 6:- Hash Indexes - Intro
With SQL Server 2014, new type of Index called the hash index was introduced. Little introduction to hash function would...
2015-09-11 (first published: 2015-09-08)
2,591 reads
Hekaton Part 5: Introduction to Indexes in "In Memory Tables"
After a short little break on Hekaton series, we are now back with the 5th post.
Two new index types...
2015-09-04
722 reads
Blogs
Identity Columns Can’t Be Updated: #SQLNewBlogger
By Steve Jones
I’m not sure I knew identity column values could not be updated. I ran...
Rolling Back a Broken Release
By Steve Jones
We had an interesting discussion about deployments in databases and how you go forward...
A bespoke reporting solution doesn’t have to cost the earth
By ChrisJenkins
You could be tolerating limited reporting because there isn’t an off the shelf solution...
Forums
Can someone please explain what happens?
I have mentioned this several times over several years. Can someone please help me...
SELECT COUNT(DISTINCT) returns null when nothing is found instead of 0
SELECT COUNT(DISTINCT Component) AS Found FROM tblComponents WHERE(Component NOT LIKE '%[a-z]%') AND(LTRIM(RTRIM(Component)) = 'GM13622')...
Remotely Engineer Fabric Lakehouse objects: The Fabric Modern Data Platform
Comments posted to this topic are about the item Remotely Engineer Fabric Lakehouse objects:...
Question of the Day
Creating JSON III
In a SQL Server 2025 table, called Beer, I have this data:
BeerIDBeerName 1Becks 2Fat Tire 3Mac n Jacks 4Alaskan Amber 8KirinI run this code:
SELECT JSON_OBJECTAGG(
BeerID: BeerName )
FROM beer;
What are the results? See possible answers