On Sep 8, 2008, at 3:56 PM, Diez B. Roggisch wrote:
>
> This does fail with the same error - the :: isn't properly
> recognized. I
> tried to escape as you said:
>
> select([literal_column(r"count(*)\:\:float")],
> and_(at.c.question_id ==
> qt.c.id)).as_scalar()
can't reproduce. Here's a test case tested against the current 0.4
and 0.5 trunks:
from sqlalchemy import *
engine = create_engine('postgres://scott:[EMAIL PROTECTED]/test',
echo=True)
foo = Table("foo", MetaData(engine), Column('data', String(50)))
foo.create(checkfirst=True)
engine
.execute(select([literal_column("count(*)::float")]).select_from(foo))
output:
2008-09-08 16:40:56,584 INFO sqlalchemy.engine.base.Engine.0x..d0
select relname from pg_class c join pg_namespace n on
n.oid=c.relnamespace where n.nspname=current_schema() and
lower(relname)=%(name)s
2008-09-08 16:40:56,585 INFO sqlalchemy.engine.base.Engine.0x..d0
{'name': 'foo'}
2008-09-08 16:40:59,962 INFO sqlalchemy.engine.base.Engine.0x..d0
SELECT count(*)::float
FROM foo
2008-09-08 16:40:59,962 INFO sqlalchemy.engine.base.Engine.0x..d0 {}
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