Solved

DB2 convert to date format

Posted on 2010-11-10
3
1,456 Views
Last Modified: 2012-05-10
DB2 string like the following MDDYYYY or 0 meaning null.  How to convert to date?  Thanks.

0
1312007
12312007
0
Comment
Question by:ewang1205
  • 2
3 Comments
 
LVL 45

Assisted Solution

by:Kent Olsen
Kent Olsen earned 450 total points
ID: 34103014
Hi ewang,

Oddly, you can get DB2 to produce a date-like value similar to what you show from a date field, but going from that value to a date is a bit more involved.  You simply need to build the data string yourself.

The code below will be close.


Good Luck,
Kent

SELECT 
  case when myvalue = 0 then NULL
       else date (right (myvalue, 4) || '-' || 
            cast (mod (cast (myvalue as integer) / 1000, 100) as char(2)) || '-' ||
            right ('0' || cast ((cast (myvalue as integer) / 100000) as varchar (2)), 2))
  end mydate
FROM ....

Open in new window

0
 
LVL 45

Accepted Solution

by:
Kent Olsen earned 450 total points
ID: 34103097
An easier to read SQL might look like the code below.


Kent

SELECT date (case LENGTH (myvalue)
       when 8 then right (myvalue, 4) || '-' || substr (myvalue, 3, 2) || '-' || left (myvalue, 2)
       when 7 then right (myvalue, 4) || '-' || substr (myvalue, 2, 2) || '-0' || left (myvalue, 1)
       else NULL
       end) mydate
FROM ....

Open in new window

0
 
LVL 27

Assisted Solution

by:tliotta
tliotta earned 50 total points
ID: 34106222
You might also do something like RIGHT('00000000' concat TRIM(myvalue), 8)... assuming MYVALUE is a CHAR(8).

Tom
0

Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

November 2009 Recently, a question came up in the DB2 forum regarding the date format in DB2 UDB for AS/400.  Apparently in UDB LUW (Linux/Unix/Windows), the date format is a system-wide setting, and is not controlled at the session level.  I'm n…
Recursive SQL in UDB/LUW (you can use 'recursive' and 'SQL' in the same sentence) A growing number of database queries lend themselves to recursive solutions.  It's not always easy to spot when recursion is called for, especially for people una…
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

829 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question