aggr error #484

dimitri-yatsenko · 2018-08-20T19:32:12Z

dj.U().aggr(ta3.Segment.aggr(nda2.Trace, n='count(*)'), m='avg(n)')

InternalError Traceback (most recent call last)
/usr/local/lib/python3.6/dist-packages/IPython/core/formatters.py in call(self, obj)
700 type_pprinters=self.type_printers,
701 deferred_pprinters=self.deferred_printers)
--> 702 printer.pretty(obj)
703 printer.flush()
704 return stream.getvalue()

/usr/local/lib/python3.6/dist-packages/IPython/lib/pretty.py in pretty(self, obj)
398 if cls is not object
399 and callable(cls.dict.get('repr')):
--> 400 return _repr_pprint(obj, self, cycle)
401
402 return _default_pprint(obj, self, cycle)

/usr/local/lib/python3.6/dist-packages/IPython/lib/pretty.py in repr_pprint(obj, p, cycle)
693 """A pprint that just redirects to the normal repr function."""
694 # Find newlines and replace them with p.break()
--> 695 output = repr(obj)
696 for idx,output_line in enumerate(output.splitlines()):
697 if idx:

/usr/local/lib/python3.6/dist-packages/datajoint/relational_operand.py in repr(self)
346
347 def repr(self):
--> 348 return super().repr() if config['loglevel'].lower() == 'debug' else self.preview()
349
350 def preview(self, limit=None, width=None):

/usr/local/lib/python3.6/dist-packages/datajoint/relational_operand.py in preview(self, limit, width)
371 for f in columns) for tup in tuples) +
372 ('\n ...\n' if has_more else '\n') +
--> 373 (' (%d tuples)\n' % len(rel) if config['display.show_tuple_count'] else ''))
374
375 def repr_html(self):

/usr/local/lib/python3.6/dist-packages/datajoint/relational_operand.py in len(self)
474 ' FROM {from_}{where}'.format(
475 from_=self.from_clause,
--> 476 where=self.where_clause)).fetchone()[0]
477
478 def bool(self):

/usr/local/lib/python3.6/dist-packages/datajoint/connection.py in query(self, query, args, as_dict, suppress_warnings)
133 # suppress all warnings arising from underlying SQL library
134 warnings.simplefilter("ignore")
--> 135 cur.execute(query, args)
136
137 except err.OperationalError as e:

/usr/local/lib/python3.6/dist-packages/pymysql/cursors.py in execute(self, query, args)
168 query = self.mogrify(query, args)
169
--> 170 result = self._query(query)
171 self._executed = query
172 return result

/usr/local/lib/python3.6/dist-packages/pymysql/cursors.py in _query(self, q)
326 self._last_executed = q
327 self._clear_result()
--> 328 conn.query(q)
329 self._do_get_result()
330 return self.rowcount

/usr/local/lib/python3.6/dist-packages/pymysql/connections.py in query(self, sql, unbuffered)
514 sql = sql.encode(self.encoding, 'surrogateescape')
515 self._execute_command(COMMAND.COM_QUERY, sql)
--> 516 self._affected_rows = self._read_query_result(unbuffered=unbuffered)
517 return self._affected_rows
518

/usr/local/lib/python3.6/dist-packages/pymysql/connections.py in _read_query_result(self, unbuffered)
725 else:
726 result = MySQLResult(self)
--> 727 result.read()
728 self._result = result
729 if result.server_status is not None:

/usr/local/lib/python3.6/dist-packages/pymysql/connections.py in read(self)
1064 def read(self):
1065 try:
-> 1066 first_packet = self.connection._read_packet()
1067
1068 if first_packet.is_ok_packet():

/usr/local/lib/python3.6/dist-packages/pymysql/connections.py in _read_packet(self, packet_type)
681
682 packet = packet_type(buff, self.encoding)
--> 683 packet.check_error()
684 return packet
685

/usr/local/lib/python3.6/dist-packages/pymysql/protocol.py in check_error(self)
218 errno = self.read_uint16()
219 if DEBUG: print("errno =", errno)
--> 220 err.raise_mysql_exception(self._data)
221
222 def dump(self):

/usr/local/lib/python3.6/dist-packages/pymysql/err.py in raise_mysql_exception(data)
107 errval = data[3:].decode('utf-8', 'replace')
108 errorclass = error_map.get(errno, InternalError)
--> 109 raise errorclass(errno, errval)

InternalError: (1054, "Unknown column '' in 'field list'")

InternalError Traceback (most recent call last)
/usr/local/lib/python3.6/dist-packages/IPython/core/formatters.py in call(self, obj)
343 method = get_real_method(obj, self.print_method)
344 if method is not None:
--> 345 return method()
346 return None
347 else:

/usr/local/lib/python3.6/dist-packages/datajoint/relational_operand.py in repr_html(self)
457 for name in heading.names])
458 for tup in tuples]),
--> 459 count=('

%d tuples

' % len(rel)) if config['display.show_tuple_count'] else '')
460
461 def make_sql(self, select_fields=None):