Andrew Poulter


Technical Article

User Defined Function for Padding Numbers

This scalar udf takes three parameters @Number INT, @Length INT, @Position CHAR(1) and returns a VARCHAR(50) string which pads @Number with zeros to the specified @Length either to the right or to the left, according to @Position ('L' or 'R').E.g. SELECT dbo.udf_PadNumber(5, 6, 'L') returns '000005' whereas SELECT dbo.udf_PadNumber(5, 6, 'R') returns '500000'. The function […]

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2006-03-13 (first published: )

161 reads

Technical Article

Last Day of Month

A script was recently published (Last_Date_Of_Month) that returns the last day of a given month/year combination. I have simplified and improved on that script by eliminating the need to use a WHILE loop. This new script exploits the flexibility of the DATEADD function which allows you to assign negative numbers (thus effectively subtracting a given […]

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2004-09-30

166 reads

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How Long is a Long I/O?

In SQL Server 2025, a long I/O is recorded in the error log with message 833. How long much an I/O request be outstanding before this message is written to the log?

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