Thank you very much. It is completely clear to me now.
Kind regards, Stéphane Thibaud 2019年5月17日(金) 20:56 Igor Sapego <isap...@apache.org>: > These are nanosecond fraction of the last microsecond (It can be only from > 0 to 999). > > Ignite's Timestamp have a nanoseconds precision, so it can not be > represented > by the datetime type only. > > You can find some details here: [1] > > [1] - > https://apache-ignite-binary-protocol-client.readthedocs.io/en/latest/source/pyignite.datatypes.standard.html#pyignite.datatypes.standard.TimestampObject > > > Best Regards, > Igor > > > > On Thu, May 16, 2019 at 9:02 AM Stéphane Thibaud <snthib...@gmail.com> > wrote: > >> I see. Thank you. I am still a bit unsure about what the second value in >> the tuple represents. Are these indeed the nanoseconds? Apparently a Python >> datetime can have differing precisions (perhaps depending on platform)... >> >> >> Kind regards, >> >> Stéphane Thibaud >> >> >> 2019年5月16日(木) 0:10 Igor Sapego <isap...@apache.org>: >> >>> I believe, it's OK to pass tuple for timestamp in python, but you also >>> should >>> add a tip for the client to inform it you are going to store timestamp >>> value. >>> >>> Take a look at tests for example: [1] >>> >>> 1 - >>> https://github.com/apache/ignite/blob/master/modules/platforms/python/tests/test_datatypes.py#L80 >>> >>> Best Regards, >>> Igor >>> >>> >>> On Wed, May 15, 2019 at 12:24 PM Stéphane Thibaud <snthib...@gmail.com> >>> wrote: >>> >>>> Thank you. I will try to create a code line to reproduce it, but I >>>> remember the following: when you do a 'select' query on a timestamp column >>>> with the Python thin client, you get a tuple. Because of that, I assumed >>>> that a tuple also had to be written in an update query. >>>> >>>> >>>> Kind regards, >>>> >>>> Stéphane Thibaud >>>> >>>> 2019年5月15日(水) 17:59 Igor Sapego <isap...@apache.org>: >>>> >>>>> Stéphane, >>>>> >>>>> Can you sharer a code line, how do you try to store timestamp value? >>>>> >>>>> Best Regards, >>>>> Igor >>>>> >>>>> >>>>> On Tue, May 14, 2019 at 7:23 PM Denis Mekhanikov < >>>>> dmekhani...@gmail.com> wrote: >>>>> >>>>>> Stéphane, >>>>>> >>>>>> Could you provide the code, that results in this exception? >>>>>> Do you try to insert the tuple as a single field via SQL? There is no >>>>>> such primitive as a tuple in SQL, so you should probably split timestamp >>>>>> into datetime and nanoseconds columns and store them separately as two >>>>>> different columns. >>>>>> >>>>>> Denis >>>>>> >>>>>> сб, 4 мая 2019 г. в 10:39, Stéphane Thibaud <snthib...@gmail.com>: >>>>>> >>>>>>> Hello Apache users, >>>>>>> >>>>>>> I am running into the following issue: when I try to store a >>>>>>> timestamp with nanosecond precision with the Python Thin client, I get >>>>>>> the >>>>>>> stack trace below. I have specified the timestamp as a tuple of >>>>>>> (datetime, >>>>>>> nanoseconds) as that is the format in which I also get timestamps back >>>>>>> from >>>>>>> the apache ignite client. Strangely, I can set just a datetime, but then >>>>>>> the nanoseconds become zero. Am I doing it in the wrong way? Any >>>>>>> suggestions? >>>>>>> >>>>>>> >>>>>>> >>>>>>> db.sql(query, query_args=[converted_row[c] for c in >>>>>>> table.column_names]) >>>>>>> File >>>>>>> "/home/snthibaud/PycharmProjects/tabee/venv/lib/python3.7/site-packages/pyignite/client.py", >>>>>>> line 401, in sql >>>>>>> max_rows, timeout, >>>>>>> File >>>>>>> "/home/snthibaud/PycharmProjects/tabee/venv/lib/python3.7/site-packages/pyignite/api/sql.py", >>>>>>> line 370, in sql_fields >>>>>>> 'include_field_names': include_field_names, >>>>>>> File >>>>>>> "/home/snthibaud/PycharmProjects/tabee/venv/lib/python3.7/site-packages/pyignite/queries/__init__.py", >>>>>>> line 260, in from_python >>>>>>> buffer += c_type.from_python(values[name]) >>>>>>> File >>>>>>> "/home/snthibaud/PycharmProjects/tabee/venv/lib/python3.7/site-packages/pyignite/datatypes/internal.py", >>>>>>> line 471, in from_python >>>>>>> buffer += infer_from_python(x) >>>>>>> File >>>>>>> "/home/snthibaud/PycharmProjects/tabee/venv/lib/python3.7/site-packages/pyignite/datatypes/internal.py", >>>>>>> line 399, in infer_from_python >>>>>>> if is_hinted(value): >>>>>>> File >>>>>>> "/home/snthibaud/PycharmProjects/tabee/venv/lib/python3.7/site-packages/pyignite/utils.py", >>>>>>> line 51, in is_hinted >>>>>>> and issubclass(value[1], IgniteDataType) >>>>>>> File "/usr/lib/python3.7/abc.py", line 143, in __subclasscheck__ >>>>>>> return _abc_subclasscheck(cls, subclass) >>>>>>> TypeError: issubclass() arg 1 must be a class >>>>>>> >>>>>>> Kind regards, >>>>>>> >>>>>>> Stéphane Thibaud >>>>>>> >>>>>>> >>>>>>>
