Solved

DB2: Casting and substring issues

Posted on 2011-09-08
3
1,793 Views
Last Modified: 2012-05-12
Hi Techies--

OK, it looks like there's an issue with leading "0's" with dates and months on a substring/cast conversion.  The date is sitting in the PRTED8 field as decimal(8,0) like 12311995 - or December 31, 1995.  That date will convert correctly to 12/31/1995 for "TermDate-Date" and 1995-12-31 for "TermDate-Varchar"  If I have a date like 01311996 what I get is: NULL for "TermDate-Date" and 996-13-11 for "TermDate-Varchar" . What is the best way to solve this issue.


SELECT
       CAST(SUBSTRING(CAST(PRTED8 AS VARCHAR( 8 )),5,4) || '-' || SUBSTRING(CAST(PRTED8 AS VARCHAR( 8 )),1,2) || '-' || SUBSTRING(CAST(PRTED8 AS VARCHAR( 8 )),3,2) AS VARCHAR(10)) AS "TermDate-Varchar",
       CAST(SUBSTRING(CAST(PRTED8 AS VARCHAR( 8 )),5,4) || '-' || SUBSTRING(CAST(PRTED8 AS VARCHAR( 8 )),1,2) || '-' || SUBSTRING(CAST(PRTED8 AS VARCHAR( 8 )),3,2) AS DATE) AS "TermDate-Date",
       DIGITS(PRTED8) AS "TermDate-Decimal"
 FROM XXXTST.SSSSS
0
Comment
Question by:ditallop
  • 2
3 Comments
 
LVL 45

Accepted Solution

by:
Kdo earned 500 total points
ID: 36505029
Hi ditallop,

My guess is that the issue is that there is NO leading zero when the day is less than 10.  The conversion from decimal drops the leading zero.

But that's easy enough to solve.  :)

 SELECT right ('0' + cast (decimal_value as varchar(8)), 8) ...

That will ensure that you're converting an 8 character string.


Of course, you can do this with integer math, too.

SELECT
  decimal_value / 1000000 as Day,
  mod (decimal_value / 1000, 100) as month,
  mod (decimal_value, 10000) as year
FROM ....


Good Luck,
Kent
0
 

Author Comment

by:ditallop
ID: 36505310

Very nice-- Thank you. The only thing I would add, is that I had the idea to issue digits(decimal_value) before the casting as an alternative to '0'  + cast(decimal_value

0
 
LVL 45

Expert Comment

by:Kdo
ID: 36505459
Hi ditallop,

The DIGITS function will work nicely, too.  :)


Kent
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

Suggested Solutions

Title # Comments Views Activity
db2 z/os V10 access path 7 340
OPENQUERY not recognizing valid table names 6 410
replication of DB2 to MS SQL 43 466
eclipse find/step into stored procedure 3 184
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…
This tutorial gives a high-level tour of the interface of Marketo (a marketing automation tool to help businesses track and engage prospective customers and drive them to purchase). You will see the main areas including Marketing Activities, Design …
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…

777 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