Export mongodb aggregation framework result to a new file

Question

I have produced some results through mongodb aggregation framework. So now I need to get those results to a file(text or any other format).

How can I achieve this ?

mongo dbname command.js > output.json http://stackoverflow.com/questions/13104800/printing-mongodb-shell-output-to-file — MartenCatcher, Nov 20 '13 at 08:32

score 1 · Answer 1 · answered Nov 20 '13 at 08:33

Check the $out operator in aggregation framework.

$out operator takes the documents returned by the aggregation pipeline and writes them to a specified collection. The $out operator lets the aggregation framework return result sets of any size. The $out operator must be the last stage in the pipeline.

The command has the following syntax, where is collection that will hold the output of the aggregation operation. $out is only permissible at the end of the pipeline:

db.<collection>.aggregate( [
     { <operation> },
     { <operation> },
     ...,
     { $out : "<output-collection>" }
] )

score 0 · Answer 2 · edited May 23 '17 at 12:31

0

Check my answer to a previous question how to export output of the aggregation framework to a new collection. After exporting to a new collection you can simply do mongodump.

edited May 23 '17 at 12:31

Community

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answered Nov 20 '13 at 08:35

Salvador Dali

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Export mongodb aggregation framework result to a new file

2 Answers2