Andre Arias andre683

## dataform-incremental-backfill.md

      
        
          
            
              
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                andre683
                / dataform-incremental-backfill.md
            
            
              Last active
              May 23, 2026 00:06
            
              
                Dataform Pre Operations JS Helper and Incremental Logic with Backfill Option 
              
          
        
      
        

      
      
    Dataform Incremental Backfill Pattern

A reusable JavaScript helper for Dataform that adds surgical date-range reprocessing to any incremental model via a CLI compilation variable. No code changes needed, no hardcoded dates to revert.

The helper

Place this in your includes/ directory (e.g. includes/incremental_ops.js).