class_docstr: Wrapper for AST query.
  Intended to ind, track, update last values in query
class_docstr_tok: ["Wrapper","for","AST","query",".","Intended","to","ind",",","track",",","update","last","values","in","query"]
docstr: String representation of the query
  Used to identify query in query_context table
docstr_tok: ["String","representation","of","the","query","Used","to","identify","query","in","query_context","table"]
code: def to_string(self) -> str:
      """
      String representation of the query
      Used to identify query in query_context table
      """
      return self.query_orig.to_string()
  
file_path: mindsdb/mindsdb/interfaces/query_context/last_query.py
imports: from typing import Union, List
  import copy
  from collections import defaultdict
  from mindsdb_sql.parser.ast import Identifier, Select, BinaryOperation, Last, Constant, Star, ASTNode, NullConstant, OrderBy
  from mindsdb_sql.planner.utils import query_traversal
label_desc: Use image node_id 3 for calling the LastQuery obj's underlying member method code with example usage: obj.to_string() and returns: self