sqlalchemy中如何使用join查询多张表

Question

select count(DISTINCT(a.cust_id)) as count,b.code, b.name from table1 as a inner join table2 as b on a.par_id = b.id where a.data = "present" group by a.par_id order by b.name asc;

如何在 sqlalchemy 中写入以获得预期结果

上面写在 sql 中的查询应该在 sqlalchemy 中是正确的。

感谢您的投入

Answer 1

希望这有效...

session.query(
    func.count(distinct(table1.cust_id)).label('count'),
    table2.code,
    table2.name
).join(
    table2,
    table1.par_id == table2.id
).filter(
    table1.data == "present"
).group_by(
    table1.par_id
).order_by(
    table2.name.asc()
).all()