docstr: Filter the columns in the DataFrame according to the SQL query.
  Args:
      df (pandas.DataFrame): The DataFrame to filter.
      query (ast.Select): The SQL query to apply to the DataFrame.
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code: def filter_columns(self, df, query):
      """Filter the columns in the DataFrame according to the SQL query.
      Args:
          df (pandas.DataFrame): The DataFrame to filter.
          query (ast.Select): The SQL query to apply to the DataFrame.
      """
      columns = []
      for target in query.targets:
          if isinstance(target, ast.Star):
              columns = self.get_columns()
              break
          elif isinstance(target, ast.Identifier):
              columns.append(target.value)
      df = df[columns]
      return df
  
imports: import pandas
  from mindsdb.integrations.libs.api_handler import APITable
  from mindsdb_sql.parser import ast
  from mindsdb.integrations.utilities.sql_utils import extract_comparison_conditions
  from typing import List, Tuple
  import requests
label_desc: Use image node_id 3 for calling the StoriesTable obj's underlying member method code with example usage: obj.filter_columns(df, query) and returns: df