Hi all,
I'm trying to solve this error...
File
"/home/sfera/release/sicer/BASE/controller/controlli/sopralluogo.py",
line 645, in verifiche
Piano.c.data_inizio <=data.get('data_sop') ,
File "/usr/lib/python2.4/site-packages/sqlalchemy/sql.py", line 1294, in
__le__
return self._compare('<=', other)
File "/usr/lib/python2.4/site-packages/sqlalchemy/sql.py", line 1423, in
_compare
raise exceptions.ArgumentError("Only '='/'!=' operators can be used with
NULL")
ArgumentError: Only '='/'!=' operators can be used with NULL
-------------------------------------
here the code that originates the above error:
sr = sa.and_(Piano.c.data_inizio <=data.get('data_sop') )
I suppose data.get('data_sop') returns a None value, thus, sa compiles
the query like so:
where piano.data_inizio <= NULL
Could someone give me, some suggest how to solve this problem?
Thank you
j
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