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