Introduction The analysis of blocking in SQL Server can be hard if the SQL Server instance has a high number of active connections. This analysis becomes complicated because busy instances could have more than one blocking connection, meaning that we could have more than just one blocking chain. For every group of blocked connections, we […]
2021-02-04
14,689 reads
Problem Finding the hole for continuous sequences of numbers could be a discouraging task even for advanced programmers. This article presents a new solution based on usage of geometry data type and on a unknown function (if not, maybe less used function) specific designed for geometry objects. Sample: Given the following sequence of [dis]continuous numbers […]
2020-03-30
1,639 reads
2020-03-23
1,536 reads
This article demonstrates how the geometric functions in SQL can be use to solve the Islands and Gaps problem.
2020-03-16
2,550 reads
Problem The usage of a collection of integers in some scenarios is considered to be optimal because of the overhead involved by the creation of another user table used just to store numbers, which is the most common solution. What are collections of integers? They are lists or arrays consisting of integers. The number of […]
2020-02-13
5,989 reads
This article is just a short follow up of previous article on filegroup restoring that describes one issue with join elimination optimization.
2017-08-10
1,004 reads
In this article, we'll explore a less used feature of SQL Server: filegroup restoring, feature that has an interesting consequence because database can become inconsistent without any warning and standard checks don't reveal any issue.
2017-06-27
3,599 reads
Welcome back, my fellow sleuths, to my mystery-inspired blog series! I’m having a ton...
By Steve Jones
This was one of the original values: The facing page has this text: No...
By Chris Yates
For decades, enterprises have thought about data like plumbers think about water: you build...
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Hi everyone I have a 1000 plus line query and I am getting an...
What happens when I run this code:
DECLARE @s VARCHAR(1000) = 'apple, pear, peach' SELECT * FROM STRING_SPLIT(@s, ', ')See possible answers