you can do this:
table = Table('mytable', metadata,
Column('blob_col', PickleType),
autoload=True
)
which will autoload everything except for the one column you care
about overriding.
On May 27, 2006, at 8:52 AM, Robin Bryce wrote:
Hi,
I have a BLOB column in a mysql table. If I reflect this table
sqlalchemy uses sqlalchemy.databases.mysql.MSBinary. All well and
good, except I'd like some way of coercing it to
sqlalchemy.types.PickleType. The model I was hoping to use was:
- offline tool specifies / manages the schema.
- runtime app *always* reflects and doesn't pull in the table
definitions in any other way.
Because I don't necessarily want to manage the full schema
description in sqlalchemy.
If I do this, and because the sqlalchemy bits of the schema are
using PickleType for BLOB columns in the offline tool, I fall
victim of "TypeError: array item must be char" when I bind
parameters for the BLOB collumns in the runtime. Reflection, of
course, can't infer BLOB means PickleType without some hint from
me. Is there a clean way to pass such a hint in ?
Simply pulling the table definitions into the run time and *not*
reflecting works find but this is a little disatisfactory.
Cheers,
Robin
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