msyqldump导出sql

mysqldump -u dbuser -p dbname users> dbname_users.sql

mysql导出csv

mysql -hdbhost -uuser -ppassword -e "select group_code,company_type,is_delete,concat(char(34),company_name,char(34)) as company_name from liexin_basic_resources.lie_company where is_delete=1" |sed -e  "s/\t/,/g" -e "s/NULL/  /g" -e "s/\n/\r\n/g" > /tmp/company.csv

注意,里面有段concat(char(34),company_name,char(34))  是用于给字段拼接双引号的,这样可以避免csv乱码

原文：https://www.php20.cn/article/379