class_docstr: This handler handles connection and execution of the Cloud Spanner statements.
class_docstr_tok: ["This","handler","handles","connection","and","execution","of","the","Cloud","Spanner","statements","."]
docstr: Render and execute a SQL query.
  
  Args:
      query (ASTNode): The SQL query.
  
  Returns:
      Response: The query result.
docstr_tok: ["Render","and","execute","a","SQL","query",".","Args",":","query","(","ASTNode",")",":","The","SQL","query",".","Returns",":","Response",":","The","query","result","."]
code: def query(self, query: ASTNode) -> Response:
      """Render and execute a SQL query.
  
      Args:
          query (ASTNode): The SQL query.
  
      Returns:
          Response: The query result.
      """
  
      # check primary key for table:
      if isinstance(query, CreateTable) and query.columns is not None:
          id_col = None
          has_primary = False
          for col in query.columns:
              if col.name.lower() == "id":
                  id_col = col
              if col.is_primary_key:
                  has_primary = True
          # if no other primary keys use id
          if not has_primary and id_col:
              id_col.is_primary_key = True
              id_col.default = Function("GENERATE_UUID", args=[])
  
      query_str = self.renderer.get_string(query, with_failback=True)
  
      return self.native_query(query_str)
  
imports: import json
  from collections import OrderedDict
  from google.oauth2 import service_account
  from google.cloud import spanner_dbapi
  from google.cloud.spanner_dbapi import Connection
  from google.cloud.sqlalchemy_spanner import SpannerDialect
  import pandas
  from mindsdb_sql import parse_sql
  from mindsdb_sql.parser.ast.base import ASTNode
  from mindsdb_sql.parser.ast import CreateTable, Function
  from mindsdb_sql.render.sqlalchemy_render import SqlalchemyRender
  from mindsdb.integrations.libs.base import DatabaseHandler
  from mindsdb.integrations.libs.const import HANDLER_CONNECTION_ARG_TYPE
  from mindsdb.integrations.libs.response import RESPONSE_TYPE
  from mindsdb.integrations.libs.response import HandlerResponse
  from mindsdb.integrations.libs.response import HandlerStatusResponse
  from mindsdb.utilities import log
label_desc: Use image node_id 7 for calling the CloudSpannerHandler obj's underlying member method code with example usage: obj.query(query) and returns: self