What is the performance implication of using a Data Blend with a large secondary data source in Tableau?

Tableau Hard

Tableau — Hard

What is the performance implication of using a Data Blend with a large secondary data source in Tableau?

Key points

  • Data Blends require querying all rows from the secondary source
  • This process is memory-intensive and slow for large datasets
  • Tableau does not push blend computation to the database for Data Blends
  • Hyper extracts are not automatically created for Data Blends

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