The relationship between ARRAY_AGG and UNNEST
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Senior Data Engineer • Contractor / Freelancer • GCP & AWS Certified
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BigQuery Arrays & Structs
Part 15 of 19
Everything you need to work effectively with nested and repeated data in BigQuery — ARRAY, STRUCT, UNNEST, ARRAY_AGG, and related functions.
A practical exercise working with ARRAYS and correlated subqueries in BigQuery
Here's an interesting SQL problem, similar to one I had to solve the other day. It involves some of our favourite BigQuery ARRAYS, but also correlated subqueries. Say we have a table events that represents some events, together with the city and the ...
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