docs: def db_alter(name, user=None, host=None, port=None, maintenance_db=None,
               password=None, tablespace=None, owner=None, owner_recurse=False,
               runas=None):
      '''
      Change tablespace or/and owner of database.
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' postgres.db_alter dbname owner=otheruser
      '''
      if not any((tablespace, owner)):
          return True  # Nothing todo?
  
      if owner and owner_recurse:
          ret = owner_to(name, owner,
                         user=user,
                         host=host,
                         port=port,
                         password=password,
                         runas=runas)
      else:
          queries = []
          if owner:
              queries.append('ALTER DATABASE "{0}" OWNER TO "{1}"'.format(
                  name, owner
              ))
          if tablespace:
              queries.append('ALTER DATABASE "{0}" SET TABLESPACE "{1}"'.format(
                  name, tablespace
              ))
          for query in queries:
              ret = _psql_prepare_and_run(['-c', query],
                                          user=user, host=host, port=port,
                                          maintenance_db=maintenance_db,
                                          password=password, runas=runas)
  
      if ret['retcode'] != 0:
          return False
  
      return True