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Rename Fields

Renames one or more fields from the input documents. Keeps the field meta of the existing field(s).

note

This could re-order the fields, placing the renamed fields at the end.

Stage as JSON​

For convenience there are two ways to declare this stage:

As an object (with keys and values)​

{
    $renameFields: {
        "q10r1": "q10r01_new_name",
        "q10r2": "q10r02_new_name",
    }
}

As an array (with keys and values)​

{
    $renameFields: [
        { from: "q10r1", to: "q10r01" },
        { from: "q10r2", to: "q10r02" },
    ]
}