Hello,
I'm want to use functionality of postgresql module
pg_trgm<http://www.postgresql.org/docs/9.1/static/pgtrgm.html>in django.
pg_trgm uses special operator % (percent sign). I don't know how
should I escape it in query extra method.
# pure SQL
SELECT content, similarity(content, 'string') AS sml
FROM table
WHERE content % 'str'
ORDER BY sml DESC, content;
# This throws exception IndexError 'tuple index out of range'
# I tried to escape percent sign with %%, or \%, but I always get same
exception
objects = MyModel.objects.extra(
select={'rank': 'similarity(content, %s)'},
select_params=[content],
where='content % %s',
params=[content],
order_by=['-rank']
)
# Raw query works ok
objects = MyModel.objects.raw('''SELECT *, similarity(content, %s) AS sml
FROM table WHERE content %% %s ORDER BY sml DESC''', [content, content])
Can you help me how write percent sign in extra() method?
Thank you
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