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Text to Date type

Posted on 2002-07-15
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Last Modified: 2006-11-17
I have a text field “EndDate” in my table, half of data have format: mm/dd/yy the rest dd-MMM
I want to convert all data from text to date type format: mm/dd/yy.
Data in this field are like :
01-Jan
02-Jul
20-Dec
24-Dec
12/26/01
12/27/01
I want to put year 2001(01) at the end where it missing and then convert all data to date type.
May data in “EndDate “should look like :
01/01/01
07/02/01
12/20/01
12/24/01
12/26/01
12/27/01

Thanks

Taras

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Question by:Taras
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8 Comments
 
LVL 54

Expert Comment

by:nico5038
ID: 7155110
Then I would use Cdate(field)

In an update query use:

IIF(len(stringdate)<7,Cdate(stringdate&"-2000"),Cdate(stringdate))

Nic;o)
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LVL 28

Accepted Solution

by:
TextReport earned 200 total points
ID: 7155125
You need to know about a couple of functions to do this and I would create a new field (always advisable as is a backupo before you start) Then you can update the new field with an update update query.

UPDATE mytable
SET mynewdate = iif(isdate(myolddatefield), cdate(myolddatefield),cdate(myolddatefield & "-2001")

Cheers, Andrew
0
 

Author Comment

by:Taras
ID: 7156081
Hi Andrew.
This is working fine.
Thanks for your help,
Taras.
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Author Comment

by:Taras
ID: 7156943
I have just one small problem Andrew it shows me year 2002 and I want 2001.
Any idea what I did wrong?
Taras.
0
 
LVL 28

Expert Comment

by:TextReport
ID: 7157434
Change the update query so it does a select with the update to part as another field and past some of the datefield and calculated field as an example of where they are going wrong, also, what version of Access is it?

Cheers, Andrew
0
 
LVL 54

Expert Comment

by:nico5038
ID: 7157468
Looks like my comment has been invisible....

Nic;o)
0
 

Author Comment

by:Taras
ID: 7163267
Hi Nico5038.
I tried you answer and it shows 2001properly and that is what I need.
I will post this question again to allocate points to you.

Thanks Taras.

0
 
LVL 54

Expert Comment

by:nico5038
ID: 7163349
Thanks for the gesture ;-)

Both solution will work, but both have the same "problem" that an invalid date won't be processed correctly.
You need to be sure that no Nulls or other garbage is in this field.
From that point of view you should first run a select query like:
SELECT iif(isdate(myolddatefield), "Yes",IIF(IsDate(myolddatefield & "-2001"),"Yes","No")) AS DateOK From tblWithDate WHERE DateOK = "No";

This will show the problem fields.

Nic;o)
0

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