UPDATE t_article ta
-- 利用LEFT JOIN的方式进行关联修改
LEFT JOIN(
-- 先通过查询的方式给每一条数据生成对应的10-500之间随机数
SELECT article_id , CAST(rand() * 10 + rand() * 500 AS SIGNED) vc , CAST(rand() * 10 + rand() * 500 AS SIGNED) lc FROM t_article ) ta2 ON ta.article_id = ta2.article_id SET ta.view_count = ta2.vc ,ta.like_count = ta2.lc;

 

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