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SQL โ€ข LESSON 177

Identify New Records

How can we query only new orders ingested since a specific timestamp boundary?

Advancedโฑ 3 Minutesโญ 1900 XP
๐Ÿค” THE QUESTION

How can we query only new orders ingested since a specific timestamp boundary?

๐Ÿ’ก WHAT IS IT?

Timestamp filtering on created_at extracts newly inserted batch records from landing tables.

๐ŸŽฏ WHAT IS IT USED FOR?

Batch ETL ingestion, delta loading, micro-batch streaming boundaries.

๐Ÿ’ป EXAMPLE
SELECT *
FROM source_orders
WHERE created_at > '2025-01-01';

๐ŸŽฏ Mission Objectives

Practice typing production-grade SQL code for Identify New Records.

  • โœ“ Timestamp filtering
  • โœ“ Batch ETL ingestion
  • โœ“ Landing table query
  • โœ“ Delta extraction