How to filter in `sqlalchemy` by string length?

Question

How to filter in sqlalchemy by string length?

This code snippet:

sess.query(db.ArticlesTable).filter(or_(
    and_(db.ArticlesTable.shor         


        

Answer 1

You need to use the func SQL function generator to create a LENGTH() function:

from sqlalchemy.sql.expression import func

sess.query(db.ArticlesTable).filter(or_(
    and_(func.length(db.ArticlesTable.shorttext) > 0),