Usual apologies for newbie question...

I'm trying to use SQLAlchemy to insert data into a MSSQL DB with columns of 
type VARBINARY(MAX). The only way I could find to avoid the error message

>  Implicit conversion from data type varchar to varbinary(max) is not 
> allowed. Use the CONVERT function to run this query.
>
wais to wrap the bound column in CONVERT(VARBINARY(MAX), ...). This however 
creates problems when I want to use the same code on other database types. 
I guess I could work around this issue by manually checking the database 
dialect, but since one purpose of SQLAlchemy appears to be to help write DB 
agnostic code, I would hope that this problem could be solved in a cleaner 
way.

Many thanks for any suggestions.

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