Introduction According to the official documentation, the READ COMMITTED isolation level “specifies that statements cannot read data that has been modified but not committed by other transactions”. So, one could think that a record returned under this isolation level existed in the committed state at the time of reading. In this article, I am going […]
2021-10-01
2,147 reads
A detailed description of a technique for the the solution of the Bin Packing Problem, that involves a recursive CTE and Window functions
2020-05-14 (first published: 2020-04-23)
5,634 reads
Introduction TOP is one of the many syntactical operators available in T-SQL and at a first view, it could seem very simple and not particularly interesting. According to the official documentation, it “limits the rows returned in a query result set to a specified number of rows or percentage of rows”. The following is the […]
2019-06-04
5,139 reads
Based on a real fact, this article demonstrates how a bad use of sp_executesql can lead to unpleasant surprises
2018-04-30
1,802 reads
Foreign Keys are one of the fundamental characteristics of relational databases and enforce the referential integrity. Is it a good idea to index a FK relationship? When can it help?
2016-09-16 (first published: 2015-06-29)
15,713 reads
SQL Server 2014 has introduced a rebuilt Cardinality Estimator (CE) with new algorithms. Which are the biggest differences between the new CE and the previous one? Which one works better? Read more to find out.
2015-04-09
6,790 reads
By Rohit Garg
🔍 Demystifying KTLO: A Deep Dive into Keep The Lights On Work in IT...
By Steve Jones
The PASS Summit goes on tour this year, with a September stop in Dallas....
By Kevin3NF
Settings That Could Be Hurting Your Performance If you’ve ever created a new SQL...
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 and AI: Integrating...
Hi, Would it be possible to upgrade from sql server 2012 sp4 to sql...
You're analyzing a query execution plan in SQL Server to determine whether the query optimizer chose to use a primary key index. Which Dynamic Management View (DMV) would you use to verify the usage of the primary key in the plan?
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