data-engineer-professional video for the data engineering team has a large Delta table named ‘users’. A recent query on the table returned some entries with
The data engineering team has a large Delta table named ‘users’. A recent query on the table returned some entries with negative values in the ‘age’ column. To avoid this issue and enforce data quality, a junior data engineer decided to add a CHECK constraint to the table with the following command: ALTER TABLE users ADD CONSTRAINT valid_age CHECK (age> 0); However, the command fails when executed. Which statement explains the cause of this failure?