I did not follow the complete thread, but here is a function which converts
any timestamp in any timezone into a character representation of a timestamp
in the following Format: YYYY-MM-DDTHH:MI:SS+/-HH:MI
If an error occurs, INVALID is returned.
(instead of DATE/TIME and SUBSTR, I used the VARCHAR_FORMAT Function)
Create Or Replace Function HSCOMMON10.TIMESTAMP_ISO8601
          (ParTimestamp  Timestamp(6)    Default Current_Timestamp,
           ParTimeZone   Decimal(6, 0)   Default Current_Timezone)
       Returns Varchar(26)
       Language SQL
       Modifies Sql Data
       Deterministic
       Set Option Datfmt = *ISO,  Dbgview = *SOURCE, Timfmt = *ISO
Begin
  Declare Continue Handler For SQLEXCEPTION Return 'INVALID';
  
  Return  (Translate(VarChar_Format(ParTimestamp, 'YYYY-MM-DD HH24:MI:SS'),
'T', ' ')  concat 
          Case When ParTimeZone < 0 Then '-' else '+' End
concat
          VarChar_Format('00010101' concat Right(Digits(ParTimeZone), 6),
'HH24:MI'));
          
End;
Mit freundlichen Grüßen / Best regards
Birgitta Hauser
"Shoot for the moon, even if you miss, you'll land among the stars." (Les
Brown)
"If you think education is expensive, try ignorance." (Derek Bok)
"What is worse than training your staff and losing them? Not training them
and keeping them!"
?Train people well enough so they can leave, treat them well enough so they
don't want to.? (Richard Branson)
-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Rob
Berendt
Sent: Donnerstag, 2. Januar 2020 19:55
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: RE: Timestamp in ISO-8601 compliant format
Why does this ignore the time separator on the set option?
CREATE OR REPLACE FUNCTION ROB.TS8601 (       
 TIMESTAMPIN TIMESTAMP )           
 RETURNS CHAR(25)                  
 LANGUAGE SQL                      
 SPECIFIC ROB.TS8601               
 NOT DETERMINISTIC                 
 READS SQL DATA                    
 CALLED ON NULL INPUT              
 SET OPTION  ALWBLK = *ALLREAD ,   
 ALWCPYDTA = *OPTIMIZE ,           
 COMMIT = *NONE ,                  
 DECRESULT = (31, 31, 00) ,        
 DYNDFTCOL = *NO ,                 
 DYNUSRPRF = *USER ,               
 TIMSEP=':',
 SRTSEQ = *HEX                     
 BEGIN                             
DECLARE CHARTIMESTAMP CHAR ( 19 ) ;
DECLARE TIMESTAMPOUT CHAR ( 25 ) ; 
SET CHARTIMESTAMP = LEFT ( CHAR ( TIMESTAMPIN ) , 19 ) ;                   
SET TIMESTAMPOUT = LEFT ( CHARTIMESTAMP , 10 )                             
CONCAT 'T' CONCAT SUBSTR ( CHARTIMESTAMP , 12 , 8 )
CONCAT ( CASE WHEN CURRENT TIMEZONE < 0 THEN '-' ELSE '+' END )            
CONCAT SUBSTR ( DIGITS ( CURRENT TIMEZONE ) , 1 , 2 ) CONCAT ':' CONCAT
SUBSTR ( DIGITS ( CURRENT TIMEZONE ) , 3 , 2 )
;                              
RETURN TIMESTAMPOUT ;          
END  ;                         
Rob Berendt
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