Converting Integer Time to HH:MM:SS:00 Format in SQL Server 2008

In SQL Server 2008, converting an integer time value to the HH:MM:SS:00 format involves a series of mathematical calculations and date manipulation functions. Let's delve into the solution.

First, we must separate the integer into its individual hour, minute, second, and millisecond components. Here's a sample query to achieve this:

declare @T int = 10455836; -- Example integer time value

select (@T / 1000000) % 100 as hour,
       (@T / 10000) % 100 as minute,
       (@T / 100) % 100 as second,
       (@T % 100) * 10 as millisecond;

The query calculates the hour, minute, second, and millisecond components individually and displays them in a tabular format.

Next, we can use date manipulation functions to assemble the components into a time value in HH:MM:SS:00 format.

select dateadd(hour, (@T / 1000000) % 100,
       dateadd(minute, (@T / 10000) % 100,
       dateadd(second, (@T / 100) % 100,
       dateadd(millisecond, (@T % 100) * 10, cast('00:00:00' as time(2))))));

This query creates a time value based on the calculated components and appends 00 for the hundredths of a second, resulting in the desired HH:MM:SS:00 format.

Clarification on Time Format

The time format HH:MM:SS:00 represents hours, minutes, seconds, and hundredths of a second. In this context, the "00" portion does not indicate milliseconds. Instead, it is a placeholder for the hundredths of a second, which is a precision of two decimal places.