Mysql 统计百分比

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SELECTf_language,a.cnt,CONCAT(ROUND(a.cnt / b.cntSum * 100, 2),'','%')FROM(SELECTf_language,count(*) AS cntFROMt_videoWHEREf_create_time >= '2017-05-06'GROUP BYf_languageORDER BYcnt DESC) AS a,(SELECTcount(*) AS cntSumFROMt_videoWHEREf_create_time >= '2017-05-06') AS b

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