Additional Articles


Technical Article

SQL Server T-SQL Tuning -TVF and Scalar Functions

A UDF is very convenient for centralising business logic as we can specify a set of business logic in one UDF which references multiple stored procedures and ad-hoc queries. However, they can lead to significant performance degradation due to their demands on the CPU

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2013-01-10

4,126 reads

External Article

SQL Server Rounding Functions - Round, Ceiling and Floor

I saw your recent tip on Calculating Mathematical Values in SQL Server and have some related issues as I try to round values in my application. My users and me have a difference of opinion on some of the calculations in our reporting applications. All of the code is in T-SQL, but I think the reporting issues are related to data types and rounding down or rounding up rules. Do you have any insight into these issues? I would like to see some examples with a variety of coding options.

2013-01-09

3,694 reads

External Article

Row Sorting in SQL

It should be easy to model a game of poker in SQL. The problem is, however, that you need to model a permutation from a set of elements. Joe Celko argues that using a group of columns to do this isn't necessarily a violation of 1NF, since a permutation is atomic. Then comes the second problem: how would you sort such a column-base permutation in order? Sorting columns in SQL?

2013-01-04

4,573 reads

Technical Article

Querying SQL Server Agent Job History Data

Often times we are tasked with having to programmatically come with a list of durations per SQL Server Agent Job to trend the run times and order the results by date. Unfortunately it's not always easy in the way the data is stored in the system tables in the MSDB database. This tip explains how to use the system tables to get the data into the correct format for dates and job durations.

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2013-01-02

3,890 reads

External Article

Free Tools for the DBA: PAL Tool

The Performance Analysis of Logs tool is a general tool for collecting and analysing log data. With the addition of a template, it becomes an effective way of analysing data from performance counters for SQL Server, in order to diagnose performance problems and capture baseline information.

2013-01-01

5,629 reads

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Question of the Day

SQL Server 2025 Server-level Roles

In SQL Server 2022+, what does the ##MS_DatabaseConnector## role allow?

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