docstr: Extract error message for queries
docstr_tok: ["Extract","error","message","for","queries"]
code: def _extract_error_message(cls, ex: Exception) -> str:
      """Extract error message for queries"""
      message = str(ex)
      with contextlib.suppress(AttributeError, KeyError):
          if isinstance(ex.args, tuple) and len(ex.args) > 1:
              message = ex.args[1]
      return message
  
imports: import contextlib
  import re
  from datetime import datetime
  from decimal import Decimal
  from re import Pattern
  from typing import Any, Callable, Optional
  from urllib import parse
  from flask_babel import gettext
  from sqlalchemy import types
  from sqlalchemy.dialects.mysql import BIT, DECIMAL, DOUBLE, FLOAT, INTEGER, LONGTEXT, MEDIUMINT, MEDIUMTEXT, TINYINT, TINYTEXT
  from sqlalchemy.engine.url import URL
  from superset.constants import TimeGrain
  from superset.db_engine_specs.base import BaseEngineSpec, BasicParametersMixin
  from superset.errors import SupersetErrorType
  from superset.models.sql_lab import Query
  from superset.utils.core import GenericDataType
label_desc: Use image node_id 6 for calling the MySQLEngineSpec obj's underlying member method code with example usage: obj._extract_error_message(cls, ex) and returns: message