[Solved] Given this simplified dbt SQL snippet for SCD Type 2:SELECT id, name, effective_date, end_date FROM dim_customer WHERE end_date IS NULL;What does this query return? | dbt

dbt - Advanced Patterns

Given this simplified dbt SQL snippet for SCD Type 2:

SELECT id, name, effective_date, end_date FROM dim_customer WHERE end_date IS NULL;

What does this query return?

ARecords with no effective_date

BAll historical records including expired

COnly the current active records

DRecords that have been deleted

Step-by-Step Solution

Solution:

Step 1: Analyze WHERE clause and interpret result
The condition 'end_date IS NULL' filters for records without an end date, meaning active versions. These are the current active records, excluding expired history.
Final Answer:
Only the current active records -> Option C
Quick Check:
WHERE end_date IS NULL = active records [OK]

Quick Trick: end_date NULL means record is active [OK]

Common Mistakes:

MISTAKES

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