On Mon, Feb 22, 2021, at 8:50 PM, Zsolt Ero wrote: > Hi, > > I'm a bit confused about the scalars() in 1.4+. The "ORM Querying Guide" > introduces it in the very first example, but it says: > "When selecting a list of single-column ORM entities, it is typical to skip > the generation of Row objects and instead receive ORM entities directly, > which is achieved using the Result.scalars() method." > https://docs.sqlalchemy.org/en/14/orm/queryguide.html#select-statements > > The confusing part for me is the usage of single-column. The listed query is: > session.execute(select(User).order_by(User.id)) > or > SELECT user_account.id, user_account.name, user_account.fullname > FROM user_account ORDER BY user_account.id > > This is clearly not a single column SQL query.
the "column" it refers towards is that which you'd get in a result row. I don't have a separate term for "elements of a result row" vs. "columns in the database". However I agree that the elements of a result row do not have a 1-1 correspondence to "columns" so suggestions welcome on what terminology we could use. > > > I see that the docs say: "single-column ORM entities" but this is quite a > puzzling thing to read for me, coming from pre-1.4 background (I've used both > ORM and Core for years). > > I always think of the ORM as something which is returning objects possibly > with some columns lazy-loaded. But now the whole object is a "ORM column"? > > I'm not suggesting any change to the code, just the documentation is > confusing for me. I think the term "columns" is confusing because it's trying to refer to result row elements, not "columns". We need a PR to fix this up. > > Regards, > Zsolt > > > > > -- > 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 view this discussion on the web visit > https://groups.google.com/d/msgid/sqlalchemy/CAKw-smDpHq2K31R%2B1txs-n8kH0_uyC0YfZJf44VKLCsSSFxEwg%40mail.gmail.com > > <https://groups.google.com/d/msgid/sqlalchemy/CAKw-smDpHq2K31R%2B1txs-n8kH0_uyC0YfZJf44VKLCsSSFxEwg%40mail.gmail.com?utm_medium=email&utm_source=footer>. -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/sqlalchemy/42d415bf-c9bc-45c1-9b02-301c4bdeca49%40www.fastmail.com.
