Hi all I'm trying to translate a sql query into sqlalchemy
http://www.pylonshq.com/pasties/6eab0a062bdbfe30b7310e5b5714f22e my efforts so far http://www.pylonshq.com/pasties/21753610908db32e133e2925535e9645 just a side note I should have named many_id something better like maintable_id so it doesn't confuse people. I was on #pylons trying to figure out how with no joy. http://pylonshq.com/irclogs/%23pylons/%23pylons.2009-04-23.log.html#t2009-04-23T10:09:52 I can do this meta.Session.query(model.History).from_statement( "SELECT history.* FROM ( SELECT max(history.history_id) AS history_id FROM history GROUP BY history.many_id ) as max_history join history ON history.history_id = max_history.history_id and history.action_id in (foo, ba")" ).all() Which works but I can't figure how to change the sql to use sqlalchemy. The main gotcha is getting the join to work in the subquery. max_history doesn't have a history_id method. Looking through the docs. http://www.sqlalchemy.org/docs/04/ormtutorial.html#datamapping_querying Half way down the page. The from_statement has something similar but only returns a single record where I need multiple records. Also in the example the column is accessed through the c method. When I try the same no columns are attached to the c method. Would this indicate that I've done something wrong in the schema? I'm using 0.4.8 and 0.5.1 on another box. Hope someone can help me. Thanks fintan --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~----------~----~----~----~------~----~------~--~---
