How Can I Covert String 'Ddmmyyyy' To Datetime 'Dd/Mm/Yyyy' In Db2 I5/Os

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Hi,

I have a problem when I try converting data from column name:'date'(string: ddmmyyyy ex:09032015) to fomat datetime (DD/MM/YYYY) and I'm using provider IBMDA400.

I use some commands to try converting but have not been successful.

My purpose is only select data from database but Visual Studio always displays error.

ex:

Cmd1: select date(to_date(my string,'dd/mm/yyyy') from table
-> In here appear error: SQ20448: Expression not valid using format string specified for TIMESTAMP_FORMAT.

And I changed: 'TIMESTAMP_FORMAT' instead of 'TO_DATE'
cmd2: select TIMESTAMP_FORMAT(mystring, 'DD/MM/RRRR HH24:MI')
-> Error SQ20448 continue to occur.
pls help me!!
thanks so much :D

Posted 8-Mar-15 20:38pm

haipt232

Updated 2-Jan-20 2:51am

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Kornfeld Eliyahu Peter · Answer 1 · 2015-03-08T21:02:00

Solution 1

As you have a date stored in string in the format of DDMMYYYY, first you have to convert it into a real date:

SQL

DATE(TO_DATE(date_string, 'DDMMYYYY'))

The result is a binary date and can be converted to any string now...

SQL

CHAR(DATE(TO_DATE(date_string, 'DDMMYYYY')), USA)

AS400 has only pre-defined formats, so 'USA' will give you MM/DD/YYYY instead of DD/MM/YYYY...You may try 'EUR' that will give DD.MM.YYYY and than replace . (dot) to / (slash)...
Check other options here: http://publib.boulder.ibm.com/iseries/v5r2/ic2924/index.htm?info/db2/rbafzmstch2func.htm[^]

Posted 8-Mar-15 21:02pm

Kornfeld Eliyahu Peter

Comments

haipt232 9-Mar-15 4:30am

thank for your answer :D and i can convert successfully .
if i try 'EUR' that will give DD.MM.YYYY but you can support me how can i replace .(dot) to /(slash)
My code:
select CHAR(DATE(TO_DATE(Day || Month || Year ,'DDMMYYYY')),USA) as Datetime from table.
Because I have 3 fields (field 1:Day, field2: Month , Filed3: Year).And I grouped them 1 field like select command above.
Thanks

Kornfeld Eliyahu Peter 9-Mar-15 4:59am

https://publib.boulder.ibm.com/iseries/v5r1/ic2924/books/c0925083585.htm

Gabriel Ironman · Answer 2 · 2020-01-02T02:51:00

Solution 2

SQL

REPLACE(CHAR(DATE(TO_DATE(a.SCFVAL, 'YYYYMMDD')), EUR),'.','-') AS mydate<pre lang="SQL">

Posted 2-Jan-20 2:51am

Gabriel Ironman