I wonder if there's a way to build up the following SQL query for PostgreSQL in SQLAlchemy using Session.query():
SELECT group_id, COUNT(DISTINCT(column1, column2)) FROM entities GROUP BY group_id; I tried this one: Session.query(Entity.group_id, sa.func.count(sa.distinct(Entity.column1, Entity.column2))).group_by(Entity.group_id) But sa.distinct doesn't support multiple columns. The Query's method .distinct() supports multiple columns, but I have no idea how to use it for this particular case. -- SQLAlchemy - The Python SQL Toolkit and Object Relational Mapper http://www.sqlalchemy.org/ To post example code, please provide an MCVE: Minimal, Complete, and Verifiable Example. See http://stackoverflow.com/help/mcve for a full description. --- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at https://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.
