SQL Server supports a number of different logical operators. These operators can be used for testing Boolean conditions that return true, false and unknown in your T-SQL code. Logical operators are useful for defining constraints to limit the rows be processed when selecting or updating data. This chapter will provide an overview of the logical […]
2022-04-20 (first published: 2020-10-09)
3,762 reads
Learn about scalar user defined functions in this next level in the Stairway.
2020-10-21 (first published: 2020-10-08)
3,633 reads
Wanted to share this script to the community just in case anyone out there may be search for a way to allow a hosted customer the ability to query certain DMVs for information without granting them View Server State. There are some other options out there, but this worked better for me after going through […]
2020-09-24
2,324 reads
2020-09-22
909 reads
2020-09-21
882 reads
Every once in awhile a table gets created without a primary key and duplicate records get entered. The problem gets even worse when you have two identical rows in the table and there is no way to distinguish between the two rows. So how do you delete the duplicate record?
2020-09-11
Do table variables and variables respect transactions? If we set the value of a variable during a transaction, and we roll it back, what happens?
2020-09-09
Inline Table Valued Functions (iTVFs) are one type of user defined function that is available to implement in SQL Server since SQL Server 2000.
iTVFs remain a very useful tool in our SQL armoury, so let's quickly revisit them and the different ways we can use them in our code.
2020-10-07 (first published: 2020-09-08)
44,615 reads
2020-09-07
764 reads
A proper relationship between two people, places or things improves the communication between them. In every real-world based application, this logic holds and a database is no different. This article discusses the different relationship types possible between database objects. The designing of these relationships between them is called modeling, and the three types of relationships […]
2020-08-31
7,601 reads
By Brian Kelley
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How can I alter the deadlock detection interval to 2 seconds instead of 5 seconds on my SQL Server 2025 instance?
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