Using FORMAT_DATE in BigQuery

Senior Data Engineer • Contractor / Freelancer • GCP & AWS Certified
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Senior Data Engineer • Contractor / Freelancer • GCP & AWS Certified
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Short, practical posts on SQL and BigQuery — from core language features to advanced query patterns. A reference for data practitioners at every level.
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The code we write daily as Data Engineers is not necessarily complicated.
We're solving a lot of problems like the following:
Given a schedule per day of the week (Monday hours are 10:00 - 22:00 / 10 am - 10 pm), find out what was the schedule for a list of calendar days.
Here's how a BigQuery solution could look like:
- using FORMAT_DATE we can extract the abbreviated week day (%a in the list of format elements for date and time parts, attached in comments)
- transform that match casing of the joined column
- (INNER) JOIN
How would your solution to such a problem look like?
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