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Which dbt-utils test would you use to ensure a column has no missing (NULL) values?

easy📝 Conceptual Q2 of 15
dbt - Advanced Testing
Which dbt-utils test would you use to ensure a column has no missing (NULL) values?
Adbt_utils.relationship
Bdbt_utils.unique_combination_of_columns
Cdbt_utils.accepted_values
Ddbt_utils.not_null
Step-by-Step Solution
Solution:
  1. Step 1: Identify the test for NULL values

    The not_null test is designed specifically to check that no NULL values exist in a column.
  2. Step 2: Exclude other tests

    unique_combination_of_columns checks uniqueness, accepted_values checks allowed values, and relationship checks foreign key relationships.
  3. Final Answer:

    dbt_utils.not_null -> Option D
  4. Quick Check:

    NULL check = not_null test [OK]
Quick Trick: No NULLs? Use not_null test from dbt-utils [OK]
Common Mistakes:
MISTAKES
  • Choosing unique tests for NULL checks
  • Confusing accepted_values with NULL validation
  • Using relationship test incorrectly

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