mongoimport choosing field type

Question

When importing data from file (csv in my case) mongoimport automatically choose data type for each field.

Is it possible to choose data type manually for specific fi

Answer 1

See the Type Fidelity section in the documentation:

mongoimport and mongoexport do not reliably preserve all rich BSON data types because JSON can only represent a subset of the types supported by BSON. As a result, data exported or imported with these tools may lose some measure of fidelity. See MongoDB Extended JSON for more information.

Use mongodump and mongorestore to preserve types.