google-bigquery - 如何检索过去某个时间的标签数量

Question

我可以在这里看到如何通过 StackExchange API 获取标签数量。是否可以在过去的某个时间获取标签数量？

如何使用BigQuery运行https://api.stackexchange.com/2.2/tags?order=desc&sort=popular&inname=java&site=stackoverflow？

Answer 1

可能的众多选项之一 - 适用于 BigQuery 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