A Solution for the Bin Packing Problem
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)
3,873 reads
Alessandro Mortola
A Plunge Into TOP
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
4,807 reads
Self SQL Injection
Based on a real fact, this article demonstrates how a bad use of sp_executesql can lead to unpleasant surprises
2018-04-30
1,645 reads
Work time calculation
One way to calculate how many minutes a person has worked considering holidays and shifts, being given starting and ending date / time
2016-09-29 (first published: 2016-09-08)
520 reads
Indexing Foreign Keys
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)
14,128 reads
Cardinality Estimator – What’s new in SQL Server 2014
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
6,532 reads
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