mysql -u用户名 -p密码-D数据库名 -e "select * from tbl_user i join tbl_role a on a.id = i.user_id where a.id = 52 limit 10" > /data1/users.txt

简洁格式：

mysql -u用户名 -p密码-D数据库名 -e "select * from tbl_user i join tbl_role a on a.id = i.user_id where a.id = 52 limit 10\G" > /data1/users.txt