为什么我在 python 3 中出现“function upper(bytea)”错误？

Question

Currently I am working to convert my py-2 project in py-3 & during this conversion I have faced below kind of error.

Partner.objects.filter(name__iexact = name_kv).count()

When I am running above query in py2 it working perfectly & getting output '0', means getting empty list.

When I am running above query in py3 it showing below kind of error.

django.db.utils.ProgrammingError: function upper(bytea) does not exist
LINE 1: ...alse AND UPPER("partners_partner"."name"::text) = UPPER('\x4...
                                                             ^
HINT:  No function matches the given name and argument types. You might need to add explicit type casts.

I have searched lot online & SO other questions but but not able to find any solution.

I figured out that it must have been python version problem & I am getting above error when my ORM query does not have any records .

Answer 1

Try to convert your variable name_kv to string type using str(name_kv) .

Update your query like Partner.objects.filter(name__iexact = str(name_kv)).count() .

You are getting error because variable containing byte type data so converting byte data to string type may solve your problem.