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Fill Times using specific interval

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Submitted on: 6/13/2006 7:22:47 AM
By: Sajid Ali Anjum 
Level: Intermediate
User Rating: By 2 Users
Compatibility: SQL Server 2000, SQL Server 7.0, SQL Server 6.5 and earlier
Views: 7792
(About the author)
 
     This piece of code can be used in any application to fill the 24 hours time combo box using specified interval. It formats the time as hour:minute. And displays the times calculated based upon used interval.
 
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Other User Comments

6/13/2006 10:07:24 AMJeff Moden

Excellent! Just to share some info, you can let SQL do most of the work for you...

CREATE PROCEDURE FillTimes
@Interval int
AS
DECLARE @Index int
DECLARE @TotalMinutes int

SET @TotalMinutes = 1440
SET @Index = 0

IF (@Interval > 0)
BEGIN
WHILE (@Index < @TotalMinutes)
BEGIN
PRINT CONVERT(CHAR(5),DATEADD(mi,@Index,0),108)
SET @Index = @Index+@Interval
END
END
ELSE
BEGIN
PRINT N'Please make sure that interval is greater than zero'
END

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6/13/2006 12:30:49 PMSajid Ali Anjum

Nice info, I tried but could not find documentation for the DATEADD third parameter in the SQL Server Books Online. Could you please share from where you got that we can set this parameter as 0 instead of date expression as documented.

In Books online the following info can be found:

Syntax
DATEADD ( datepart , number, date )

date:

Is an expression that returns a datetime or smalldatetime value, or a character string in a date format.

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6/13/2006 3:47:24 PMJeff Moden

Sure... "0" is a valid expression that returns a datetme or smalldatetime value... it is the underlying date serial number for '01/01/1900' which is the basis for all SQL dates (number of days since 01/01/1900 00:00:00.000). The "0" is just a shorthand for that date and it's quite common to use it in many date functions.

In this particular case, you could use just about any integer that equates to a date because all we're interested in is adding time to some whole date. Every date that has no time (or has a time of midnight) can be represented by a whole number. I use "0" because it's an indication that I don't really care about the date. Like I said, it's just shorthand for 01/01/1900.
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6/14/2006 12:01:16 AMJeff Moden

Sorry, my vote didn't register before... although I did it a different way, I thought your code was rather clever.
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