How can I use mongodump to dump out records matching a specific date range?

Question

I\'m trying to use the mongodump command to dump out a bunch of records created on a specific date. The records include a \"ts\" field which is a MongoDB Date() object.

Answer 1

In MongoDB 3.2, we can use --queryFile option with mongodump.

first of all, create a json file:

//query.json
{"serverTime": {"$gte": ISODate("2016-01-30T16:00:00.000Z"), "$lt": ISODate("2016-01-31T16:00:00.000Z")}}

next,use mongodump:

mongodump --db <dbName> --collection <collectionName> --queryFile query.json

simple and clear.

Answer 2

This should work, what didn't work about your $date query? :

mongodump --query  {"ts":{$gt:{$date:178929000}}}

Answer 3

Extended JSON Format works, as can be found in the documentation (https://docs.mongodb.com/database-tools/mongodump/). Example:

--query '{ "timest": { "$gte": { "$date": "2020-08-19T00:00:00.000Z" } } }'

Answer 4

use single quotes around the query. I found that ISODate() doesn't work.

mongodump --query  '{"ts":{$gt:{$date:178929000}}}'

Answer 5

Edit: fixed typos

Add an update:

1. mongodump --query doesn't support IsoDate, but accepts Date in milliseconds form.

2. As date command behaves different in OS X, date -d 2011-08-10 +%s does not work for me. If you've run into the same issue, try to read the manual or use this:

   • Get current time in seconds:

     date -j -f "%a %b %d %T %Z %Y" "`date`" "+%s"
     

   • Get specific time in seconds:

     date -j -f "%Y-%m-%d %H:%M:%S" "2014-01-01 00:00:00"  "+%s"
     

3. Use the single quote version to avoid escaping.

   mongodump --query '{updated_at: { $gte: Date(1403280000000) } }'
   

Answer 6

I solved it - the magic incantation I was looking for is:

mongodump --query "{\"ts\":{\"\$gt\":{\"\$date\":`date -d 2011-08-10 +%s`000},\"\$lte\":{\"\$date\":`date -d 2011-08-11 +%s`000}}}"