On Feb 18, 2010, at 6:02 AM, Manlio Perillo wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Michael Bayer ha scritto: >> On Feb 17, 2010, at 9:56 AM, Manlio Perillo wrote: >> >> Michael Bayer ha scritto: >>>>> [...] >>>>> By the way, I have found an incorrect behaviour in SQLAlchemy, when the >>>>> select column list is empty. >>>>> >>>>> query = sql.select( >>>>> None, contents.c.slug == 'python', from_obj=[join]) >>>>> >>>>> >>>>> SQLAlchemy generates an incorrect SQL query. >>>>> It should, instead, automatically add the columns from the `from_obj` >>>>> list, skipping duplicate columns involved in a join. >>>>> >>>>>> sounds more like an assumption to me. >>>>>> select(None) is specifically a select with no columns, >>>>>> which can be added later using column() (that might be the intent). >> Of course. >> The columns should be added when the SQL query is generated. >> >>> yeah that's not how it works. the columns are added to the structure. >>> statement compilation doesn't make huge guesses like that. >> > > Ok. > My idea was to implement the equivalent of SQL '*' column. > I can't use the literal '*' in the select column list, since it will > disable (?) SQLAlchemy type system. > And I don't want to manually add the columns, since I will end up with > duplicate columns.
that's a better idea. how about sqlalchemy.EXPAND_STAR ? > > > > Manlio > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.10 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org > > iEYEARECAAYFAkt9Hi0ACgkQscQJ24LbaURw+ACcDmBfcJTZyJJtn3w7Iw02tUY6 > bZAAnAr+m0GNB2pwn/uQFxjHibvaTGpB > =9462 > -----END PGP SIGNATURE----- > > -- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To post to this group, send email to sqlalch...@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. > -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalch...@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.
