摘要：find -type f -print | xargs grep "app_bxtj_bhqs_yd" | awk '{gsub(":"," ");print $1}' | uniq -c sed -i "s/yd_xx_xxsl/app_xx_xxsl_ndz/g" `grep len -rl . 阅读全文

摘要：把不重复的记录复制到一个新table, 之后删除旧table, 再把新table改回旧table的名不就行了？ create table new_table_name select *, count(distinct title_name) from old_table_name group by 阅读全文