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Why might an incremental model still incur significant costs despite processing less data?

hard📝 Conceptual Q10 of 15
dbt - Incremental Models
Why might an incremental model still incur significant costs despite processing less data?
ABecause incremental models always process full data
BBecause dbt charges extra for incremental models
CBecause the incremental query is complex or scans large partitions
DBecause incremental models skip caching
Step-by-Step Solution
Solution:
  1. Step 1: Recognize factors affecting cost beyond data volume

    Complex queries or scanning large partitions increase compute time and cost.
  2. Step 2: Understand incremental model cost drivers

    Even with less data, inefficient queries or large partitions can cause high costs.
  3. Final Answer:

    Because the incremental query is complex or scans large partitions -> Option C
  4. Quick Check:

    Query complexity and partition size affect cost [OK]
Quick Trick: Optimize query and partitions to reduce incremental costs [OK]
Common Mistakes:
MISTAKES
  • Assuming incremental always means low cost
  • Believing dbt charges extra for incremental
  • Thinking caching is skipped in incremental models

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