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Added warn note to docs about MySQL issues with 0000-00-00 date strings 

MySQL accepts 0000-00-00 as a valid date but MySQLdb converts those
values into None. So there will be problems for instance if trying to
transport the data using dumpdata/loaddata.

This patch refs #6642 that has been closed as wontfix since this is a
particular problem of MySQL.
This commit is contained in:
Juan Catalano 2013-03-18 20:54:24 -03:00
parent 31b5275235
commit 36b45611bc
1 changed files with 8 additions and 0 deletions
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docs/ref/databases.txt
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@ -241,6 +241,14 @@ required for full MySQL support in Django.
1.2.1p2 or newer, then delete the ``sets.py`` file in the MySQLdb 1.2.1p2 or newer, then delete the ``sets.py`` file in the MySQLdb
directory that was left by an earlier version. directory that was left by an earlier version.
.. note::
There are known issues with the way MySQLdb converts date strings into
datetime objects. Specifically, date strings with value 0000-00-00 are valid for
MySQL but will be converted into None by MySQLdb.
This means you should be careful while using loaddata/dumpdata with rows
that may have 0000-00-00 values, as they will be converted to None.
.. _MySQLdb: http://sourceforge.net/projects/mysql-python .. _MySQLdb: http://sourceforge.net/projects/mysql-python
Creating your database Creating your database