2017-08-08 31 views

回答

1

可能有多个选项之一 - 为BigQuery的标准SQL

#standardSQL 
SELECT tag, COUNT(1) AS popular 
FROM `bigquery-public-data.stackoverflow.stackoverflow_posts`, 
    UNNEST(SPLIT(tags, '|')) AS tag 
WHERE DATE(creation_date) 
    BETWEEN DATE_SUB(CURRENT_DATE(), INTERVAL 3 YEAR) 
    AND DATE_SUB(CURRENT_DATE(), INTERVAL 2 YEAR) 
GROUP BY tag 
HAVING tag LIKE '%java%' 
ORDER BY popular DESC 
-- LIMIT 100 
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