shell脚本操作mysql数据库删除重复的数据

数据库  /  管理员 发布于 7年前   152

由于之前的业务，造成数据库上产生了脏数据，写个脚本删除重复的数据。由于是开发测试环境，所以选择任意删除相同uid中的一条。由于每次执行只删除重复数据的一条，需要重复执行，如果本轮没有数据被删就OK

#!/bin/sh# delete all company's duplicate uidMYSQL_BIN_PATH=/data/mysql/server/mysql_3306/binMYSQL_SOCK_PATH=/data/mysql/server/mysql_3306/tmpDBUSER=dbuserDBPWD=userpwdDBHOSTNAME=192.168.1.105PORT=3306# get all company_idfor company_id in `${MYSQL_BIN_PATH}/mysql -u${DBUSER} -p${DBPWD} -h ${DBHOSTNAME} -P ${PORT} --socket=${MYSQL_SOCK_PATH}/mysql.sock -e "  SELECT company_id FROM company.companypage;"`do if [ $company_id != "company_id" ] ; then# if [ $company_id -eq 2733 ] ; then  suffix=`expr ${company_id} % 100` for user_id in `${MYSQL_BIN_PATH}/mysql -u${DBUSER} -p${DBPWD} -h ${DBHOSTNAME} -P ${PORT} --socket=${MYSQL_SOCK_PATH}/mysql.sock -e " SELECT user_id FROM company.company_candidate_${suffix} WHERE company_id=${company_id} AND user_id>0 GROUP BY company_id, user_id HAVING COUNT(user_id) > 1;"` do if [ $user_id != "user_id" ] ; then  ${MYSQL_BIN_PATH}/mysql -u${DBUSER} -p${DBPWD} -h ${DBHOSTNAME} -P ${PORT} --socket=${MYSQL_SOCK_PATH}/mysql.sock -e "  DELETE FROM company.company_candidate_${suffix} WHERE company_id=${company_id} and user_id=${user_id} limit 1;"   echo "delete from company_candidate_${suffix} where company_id=${company_id} and user_id=${user_id} limit 1" fi done# fi fidoneexit 0

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