class_docstr: Find the most decimal places present for any value in this column.
  
  :param column_name:
      The name of the column to be searched.
code: def __init__(self, column_name):
      self._column_name = column_name
  
file_path: agate/agate/aggregations/max_precision.py
imports: from agate.aggregations.base import Aggregation
  from agate.data_types import Number
  from agate.exceptions import DataTypeError
  from agate.utils import max_precision
label_desc: Use image node_id 1 to create a new MaxPrecision object from inherited base classes: Aggregation with example: obj = MaxPrecision(column_name)