cankao : https://blog.csdn.net/enjolras_fuu/article/details/96479807
mongoexport --host 127.0.0.1 --port 27017 --db ELSA_MILESTONE_SUBSCRIPTION_SERVICE --collection 'milestone_work_table' --type csv --fieldFile /opt/milestone_work_table.txt --out /opt/milestone_work_table.csv --limit 5
mongoexport -d test -c records -q '{ a: { $gte: 3 }, date: { $lt: { "$date": "2016-01-01T00:00:00.000Z" } } }' --fields "_id,a,b,c,date" --type=csv --out exportdir/myRecords.csv
mongoexport -d test -c records -q '{ a: { $gte: 3 }, date: { $lt: { "$date": "2016-01-01T00:00:00.000Z" } } }' --fieldFile fields.txt --type=csv --out exportdir/myRecords.csv
原文链接：https://blog.csdn.net/enjolras_fuu/article/details/96479807