text: #
  # Licensed to the Apache Software Foundation (ASF) under one
  # or more contributor license agreements.  See the NOTICE file
  # distributed with this work for additional information
  # regarding copyright ownership.  The ASF licenses this file
  # to you 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, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  # KIND, either express or implied.  See the License for the
  # specific language governing permissions and limitations
  # under the License.
  from typing import TYPE_CHECKING, Iterable, List, Mapping, Optional, Sequence, Union
  
  from airflow.models import BaseOperator
  from airflow.providers.postgres.hooks.postgres import PostgresHook
  from airflow.www import utils as wwwutils
  
  if TYPE_CHECKING:
      from airflow.utils.context import Context
  
  
  class PostgresOperator(BaseOperator):
      """
      Executes sql code in a specific Postgres database
  
      :param sql: the SQL code to be executed as a single string, or
          a list of str (sql statements), or a reference to a template file.
          Template references are recognized by str ending in '.sql'
      :param postgres_conn_id: The :ref:`postgres conn id <howto/connection:postgres>`
          reference to a specific postgres database.
      :param autocommit: if True, each command is automatically committed.
          (default value: False)
      :param parameters: (optional) the parameters to render the SQL query with.
      :param database: name of database which overwrite defined one in connection
      """
  
      template_fields: Sequence[str] = ('sql',)
      # TODO: Remove renderer check when the provider has an Airflow 2.3+ requirement.
      template_fields_renderers = {
          'sql': 'postgresql' if 'postgresql' in wwwutils.get_attr_renderer() else 'sql'
      }
      template_ext: Sequence[str] = ('.sql',)
      ui_color = '#ededed'
  
      def __init__(
          self,
          *,
          sql: Union[str, List[str]],
          postgres_conn_id: str = 'postgres_default',
          autocommit: bool = False,
          parameters: Optional[Union[Mapping, Iterable]] = None,
          database: Optional[str] = None,
          **kwargs,
      ) -> None:
          super().__init__(**kwargs)
          self.sql = sql
          self.postgres_conn_id = postgres_conn_id
          self.autocommit = autocommit
          self.parameters = parameters
          self.database = database
          self.hook: Optional[PostgresHook] = None
  
      def execute(self, context: 'Context'):
          self.hook = PostgresHook(postgres_conn_id=self.postgres_conn_id, schema=self.database)
          self.hook.run(self.sql, self.autocommit, parameters=self.parameters)
          for output in self.hook.conn.notices:
              self.log.info(output)
  