Bamakus Montreuil on 18 Apr 2024 11:07:54
Improve DATAFLOW GEN2 around KIMBALL Patterns [1# SNAPSHOTS]
- Offer something similar on DBT cloud to deal with rows snapshots (PK , values , Start_date , End_date)
- Based a primary key and columns , we need to track changes from Source (security==> SQL instructions to occur ==> only if datetime a business column value on source is >= targeted row one)
- "BIG revolution" , here on power query as we are on UPSERT or MERGE + INSERT , according to UPDATE an END_DATE system column value on current rows
and create a new ROW based new values ... similar primary KEY (PK , values , Start_date system , End_date system )
- Comments (1)
Comments (1)
RE: Improve DATAFLOW GEN2 around KIMBALL Patterns [1# SNAPSHOTS]
Also ADD a surrogate key ;>) Will help to manage SLOW CHANGE DIMENSION on the semantic model Snapshot table : surrogate key + business key + rows columns ,where we need to track changes from Source Merged via LEFT JOIN to a full refreshed table