text: # Copyright 2021 PingCAP, Inc.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #      http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # See the License for the specific language governing permissions and
  # limitations under the License.
  from sqlalchemy import util
  from sqlalchemy.dialects.mysql.base import BIT
  from sqlalchemy.dialects.mysql.cymysql \
      import MySQLDialect_cymysql, _cymysqlBIT
  
  from .base import TiDBDialect
  
  
  class TiDBDialect_cymysql(MySQLDialect_cymysql):
      driver = "cymysql"
  
      colspecs = util.update_copy(TiDBDialect.colspecs, {BIT: _cymysqlBIT})
  
  
  dialect = TiDBDialect_cymysql
  