Operations
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.. toctree::
    :maxdepth: 1
    :hidden:

    operations.coalesce_column
    operations.copy_column
    operations.count_items
    operations.delete_column
    operations.extract_uppercase
    operations.highlight
    operations.merge_columns
    operations.query
    operations.rename_column
    operations.tokenize_column
    operations.transform_column