sql LEFT JOIN SELECT

最新推荐文章于 2025-03-21 17:42:00 发布

hi 你好。

最新推荐文章于 2025-03-21 17:42:00 发布

阅读量9.2k

点赞数 1

分类专栏：其他文章标签： sql 多表查询 join

本文链接：https://blog.youkuaiyun.com/songrps/article/details/102522260

版权

其他专栏收录该内容

2 篇文章

订阅专栏

SELECT
	a.qid,
	b.search_count,
	b.search_user
FROM
	oracledb.tmp_qid_20191012 a
LEFT JOIN (
	SELECT
		get_json_object (t.extend, '$.questionId') AS questionId,
		count(1) AS search_count,
		count(DISTINCT t.machineid) AS search_user
	FROM
		oracledb.bdp_otb_server_pksp t
	WHERE
		t.partdate >= 'date20190701'
	AND t.partdate <= 'date20190930'
	AND t.functionname = '关键字'
	GROUP BY
		get_json_object (t.extend, '$.questionId')
) b ON a.qid = b.questionId