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0
Q: 

customize filter or property in sqlalchemy

I'm using the SQLAlchemy ORM to work with both MySQL and sqlite. Suppose I have a function that will take input from a column of string type and finally return an integer. The logic of this function may be complicated that can not be implemented by simply using built-in SQL functions provided by back-end database engines. I am wondering what is the best way to perform the query based on this function.

Thanks.

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