Additional Articles


External Article

Convert Implicit and the related performance issues with SQL Server

I was a running a routine query using an equal operator on the only column of the primary key for a table and I noticed that the performance was terrible. These queries should have been flying because all I was doing was retrieving one row of data which should have been doing an index seek. When I looked at the query plan it was doing a scan instead. This tip shows you what I found and how to resolve the problem.

2009-04-27

3,197 reads

Technical Article

SQL Server Data Mining: Plug-In Algorithms

Describes how SQL Server 2005 Data Mining allows aggregation directly at the algorithm level. Although this restricts what the third-party algorithm developer can support in terms of language and data types, it frees the developer from having to implement data handling, parsing, meta data management, session, and rowset production code on top of the core data mining algorithm implementation.

2009-04-22

1,606 reads

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Question of the Day

UNISTR Basics

What does this code return in SQL Server 2025+? (assume the database has an appropriate collation)

SELECT UNISTR('Hello 4E16754C') AS 'A Classic';
A:   B:  

See possible answers