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Concatenation of Timestamps not possible in DB2 for z/OS
This SQL runs in DB2 LUW but not in DB2 z/OS:
WITH CTEREVUR AS( SELECT OID, CREATEDBY, CREATEDAT, NAME, VALIDTO, VALIDFROM, UPDATEACTION, REPLACEDAT, TIMESTAMP_FORMAT(VALIDFROM, 'YYYY-MM-DD') || TIMESTAMP_FORMAT(VALIDTO, 'YYYY-MM-DD') AS COMBINE FROM FE_REVISIONUSERROLE WHERE OID = ? UNION SELECT OID, CREATEDBY, CREATEDAT, NAME, VALIDTO, VALIDFROM, 'CHANGED' AS UPDATEACTION, CREATEDAT, TIMESTAMP_FORMAT(VALIDFROM, 'YYYY-MM-DD') || TIMESTAMP_FORMAT(VALIDTO, 'YYYY-MM-DD') AS COMBINE FROM FE_USERROLE WHERE OID = ? ), CTECHANGEDETECT AS( SELECT OID, CREATEDBY, CREATEDAT, COMBINE, LAG(COMBINE) OVER (ORDER BY CREATEDAT) AS PREVIOUSCOMBINE, NAME, VALIDFROM, VALIDTO, UPDATEACTION, REPLACEDAT, ROW_NUMBER() OVER(ORDER BY CREATEDAT) AS RN FROM CTEREVUR ORDER BY CREATEDAT ) SELECT 'REVISION' AS TYP, OID, CREATEDBY, CREATEDAT, VALIDFROM, VALIDTO, NAME, CASE WHEN RN = 1 THEN 'NEW' ELSE 'CHANGED' END AS UPDATEACTION, REPLACEDAT FROM CTECHANGEDETECT WHERE PREVIOUSCOMBINE <> COMBINE OR PREVIOUSCOMBINE IS NULL
This Topic has already been discussed in January in a Meeting in SVL between Christian Daser and Chris Crone.
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