If you’ve ever had to do a recursive query in DB2 to get a hierarchy of records, feel free to use this as a starting point…
WITH LINKS (PARENT_ID, CHILD_ID, UPDATED_TS) AS ( SELECT ROOT.PARENT_ID, ROOT.CHILD_ID, ROOT.UPDATED_TS FROM XX.EVENTS ROOT WHERE ROOT.CHILD_ID = '234ASDFASDF' UNION ALL SELECT CHILD.PARENT_ID, CHILD.CHILD_ID, CHILD.UPDATED_TS FROM LINKS PARENT, XX.EVENTS CHILD WHERE PARENT.PARENT_ID = CHILD.CHILD_ID ) SELECT PARENT_ID, CHILD_ID, UPDATED_TS FROM LINKS ORDER BY UPDATED_TS FOR READ ONLY WITH UR
… yes, newer versions of DB2 have this ability built in but you’re not always using the most recent version are you??
Thanks to this page for pointing me in the right direction.