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Rename Fields

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


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

Stage as JSON

This stage is an array containing one or more renaming instructions. For each rename instruction, specify which variable to rename in the "from" field. Specify the new name in the "to" field.

{ "from": "A1", "to": "A1_old" },
{ "from": "B1", "to": "B1_old" }