Change is allowed. Silent change is not. Your first principle is: Schema version is part of the data identifier. events_v2.parquet is a different entity than events_v1.parquet . Never mutate; deprecate.
Stop cleaning the swamp. Stop building the bridge. Stop the garbage at the gate.
Audit your warehouse. Pick one critical table. Enforce NOT NULL on every single column. If you truly need a missing value, use a sentinel row (e.g., id = 0 , name = "UNKNOWN" ). You will be shocked how many bugs disappear.
Go ab initio , or go home. [Your Name] writes about the intersection of rigorous engineering and practical data science. Disagree with the zero-NULL policy? [Link to comments or Twitter.]
Stop polishing bad data. Start building it right from the first principle.
Change is allowed. Silent change is not. Your first principle is: Schema version is part of the data identifier. events_v2.parquet is a different entity than events_v1.parquet . Never mutate; deprecate.
Stop cleaning the swamp. Stop building the bridge. Stop the garbage at the gate.
Audit your warehouse. Pick one critical table. Enforce NOT NULL on every single column. If you truly need a missing value, use a sentinel row (e.g., id = 0 , name = "UNKNOWN" ). You will be shocked how many bugs disappear.
Go ab initio , or go home. [Your Name] writes about the intersection of rigorous engineering and practical data science. Disagree with the zero-NULL policy? [Link to comments or Twitter.]
Stop polishing bad data. Start building it right from the first principle.
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