WITH expressions in BigQuery
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Senior Data Engineer • Contractor / Freelancer • GCP & AWS Certified
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Practical SQL
Part 6 of 50
Short, practical posts on SQL and BigQuery — from core language features to advanced query patterns. A reference for data practitioners at every level.
Aggregating Multiple SCD-2 Attribute Timelines in BigQuery
Here’s another practical BigQuery SQL exercise 💡 Say you have an input SCD2-style table with [valid_from, valid_to) and key-value attributes. Now you want to determine which attributes were valid at the same time for a given grain (e.g. id). To do t...
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