BigQuery date extract: WEEK vs ISOWEEK

extract_week.sql

-- https://cloud.google.com/bigquery/docs/reference/standard-sql/date_functions#extract

SELECT EXTRACT(WEEK FROM DATE '2024-12-31') -- 52
,EXTRACT(ISOWEEK FROM DATE '2024-12-31') -- 1, this could be incorrectly counted as week 1 in year 2024
,EXTRACT(WEEK FROM DATE '2025-01-01') -- 0
,EXTRACT(ISOWEEK FROM DATE '2025-01-01') -- 1
,EXTRACT(WEEK FROM DATE '2023-12-31') -- 53
,EXTRACT(ISOWEEK FROM DATE '2023-12-31') -- 52
,EXTRACT(WEEK FROM DATE '2024-01-01') -- 0
,EXTRACT(ISOWEEK FROM DATE '2024-01-01') -- 1
;