How do I express “WHERE 'value' like column” in SQLAlchemy?

问题

I'm trying to do a where clause in reverse order with SQLAlchemy ORM. So instead of Table.query.filter(Table.column.like(value)), I'd like to end up with...

select * from table where 'mail.google.com' like domain;

...to select this row:

| domain       |
| ------------ |
| %.google.com |

Ideally, I'd be able to do this:

Table.query.filter(BinaryExpression('mail.google.com', Table.domain, custom_op('like')).all()

But it return the AttributeError: 'str' object has no attribute 'self_group'.

How is this expressed in SQLAlchemy?

回答1:

This works for me.

from sqlalchemy.sql.expression import literal
Table.query.filter(literal('mail.google.com').like(Table.domain)

来源：https://stackoverflow.com/questions/46783346/how-do-i-express-where-value-like-column-in-sqlalchemy