题解 | #提取博客URL中的用户名#
提取博客URL中的用户名
https://www.nowcoder.com/practice/26c8715f32e24d918f15db69518f3ad8
SELECT
device_id, SUBSTRING_INDEX(SUBSTRING_INDEX(blog_url,'/',3),'/',-1) AS user_name
FROM user_submit
提取博客URL中的用户名
https://www.nowcoder.com/practice/26c8715f32e24d918f15db69518f3ad8
SELECT
device_id, SUBSTRING_INDEX(SUBSTRING_INDEX(blog_url,'/',3),'/',-1) AS user_name
FROM user_submit
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