sqlalchemy can't read null dates from sqlite3 (0000-00-00): ValueError: year is out of range

Question

When I try to query a database containing dates such as 0000-00-00 00:00:00 with sqlachemy, I get ValueError: year is out of range.

Here’s the db dump:

Here’s the stacktrace:

File "/home/rob/.virtualenvs/calif/lib/python3.5/site-packages/sqlalchemy/engine/result.py" in items
  163.         return [(key, self[key]) for key in self.keys()]

File "/home/rob/.virtualenvs/calif/lib/python3.5/site-packages/sqlalchemy/engine/result.py" in <listcomp>
  163.         return [(key, self[key]) for key in self.keys()]

File "/home/rob/.virtualenvs/calif/lib/python3.5/site-packages/sqlalchemy/engine/result.py" in __getitem__
  90.                 return processor(self._row[index])

File "/home/rob/.virtualenvs/calif/lib/python3.5/site-packages/sqlalchemy/processors.py" in process
  48.                 return type_(*list(map(int, m.groups(0))))

Exception Type: ValueError at /
Exception Value: year is out of range

Is this normal ? Can sqlalchemy read dates like that ? Is this a python limitation ? Is there a workaround to keep the date as-is (not converting to None) ?

Asked By: damio

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Source

Answer 1

Got the answer via inklesspen on IRC: Python datetime representation has minimum year and it’s 1

Answered By: damio

Answer 2

I was able to bypass the problem by using sqlalchemy.text

from sqlalchemy import text

with engine.connect() as conn:
    result = conn.execute(text("select * from table"))
    ....

Answered By: sofaKing

sqlalchemy can't read null dates from sqlite3 (0000-00-00): ValueError: year is out of range

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