shell脚本操作mysql数据库删除重复的数据
(编辑:jimmy 日期: 2024/11/5 浏览:3 次 )
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 uid MYSQL_BIN_PATH=/data/mysql/server/mysql_3306/bin MYSQL_SOCK_PATH=/data/mysql/server/mysql_3306/tmp DBUSER=dbuser DBPWD=userpwd DBHOSTNAME=192.168.1.105 PORT=3306 # get all company_id for 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 fi done exit 0
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