medium10 pts · first answer countsdata-pipelinesdata-qualitydata-observability

A column that is sometimes null

referral_code is null for about 60% of sign-ups, which is normal. Last night it was null for 99%, because a tracking change broke it. Which check would catch this?

A.A not_null test on the referral_code columnB.A unique test on the referral_code columnC.A row count test on the tableD.A null-rate check, e.g. fail above 80%

Discussion 0

Join free to post in the discussion.

A column that is sometimes null

Discussion 0

Related questions