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Varchar to datetime

Posted on 2002-04-17
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Last Modified: 2011-10-03
Hi experts,

  I have a sql table in an sql database version 7.0 and i have a CallCenter software called Telephony@Work
CallCenter@nywhere 5.0 but in the table that holds the date of the and time of the call is avarchar
field and the people that make the software toll me to use this formula to convert that field to a valid
date field:

 Validdate = Date(Value in the field)/86400+Date("1970,1,1")-4/24)

 This formula works great on MsAccess but when i try to put this formula in crystal reports i receive an error tellin me that the number of days is too large or is not an integer.

What i am doing wrong.

Thanks
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LVL 101

Expert Comment

by:mlmcc
ID: 6949104
Missing a parenthesis

Change it to

Validdate = Date((Value in the field)/86400+Date("1970,1,1")-4/24)

mlmcc

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LVL 12

Author Comment

by:Alfredo Luis Torres Serrano
ID: 6950267
As you must know the parenthesis is not the only mistake in the text because in crystal reports the function date can not be date("1970,1,1") must be date(1970,1,1) but those are not the real problem.

Still waiting for the experts
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LVL 101

Expert Comment

by:mlmcc
ID: 6950548
Try

Validdate = Date((Value in the field)/86400+DateValue("1970,1,1")-4/24)

If that doesn't work, what does the "Value in the field" look like.  Provide a some sample values.

mlmcc
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LVL 12

Author Comment

by:Alfredo Luis Torres Serrano
ID: 6950810
Datevalue is not a formula in crystal reports 8.0

The field looks like: 1012853835 For 04/02/02 04:17:15 p.m.
Applying the formula in MsAccess.

The date format is dd/mm/yy because i am in Venezuela
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LVL 101

Expert Comment

by:mlmcc
ID: 6951655
DateValue is a formula in my CR.  
It is in the Functions column under the subgroup Date/Time

Maybe you didn't do a full install?
Field looks like the number of seconds from some date (thats what i expected it to be the way the conversion was being doen.)

Let me try the formula with that value.

mlmcc

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LVL 101

Accepted Solution

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mlmcc earned 400 total points
ID: 6951767
CR doesn't make this easy.

What you have is the number of seconds that have elapsed since January 1, 1970.  Also the time is stored with midnight Grenwich time.

Here is a formula that works for the value you gave me.  It should work for all but may be off by an hour.

dateadd("h",-4,dateadd("d",1,dateadd("yyyy",1970,CDateTime(Value in the field/86400.0))))


When daylight savings time ends you may have to change ths to
dateadd("h",-5,dateadd("d",1,dateadd("yyyy",1970,CDateTime(Value in the field/86400.0))))

good luck
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LVL 101

Expert Comment

by:mlmcc
ID: 6981347
Do you need anything more?

mlmcc
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Expert Comment

by:mnye
ID: 9346564
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