Thank you, Jeremy! It did worked. One last question. About migrations. I have a few foreign keys already declared and they are set to "on delete SET NULL". I would like to change them to "on delete CASCADE". I know there was a way of doing this but alter_table seems not mentioned about this. How can I change cascade styule for an existing foreign key using migrations?
Thanks, Gencer. On Tuesday, October 23, 2018 at 6:28:24 PM UTC+3, Jeremy Evans wrote: > > On Tuesday, October 23, 2018 at 7:46:47 AM UTC-7, genc wrote: >> >> Hi Jeremy, >> >> I dig into querying.md and can't find any example about "NOT EXISTS". >> >> How can we write this query in Sequel: >> >> select * from books where not exists (select * from writers where .....) >> >> > I doubt NOT EXISTS would be documented explicitly. However, you just need > to combine the NOT with the EXISTS: > > DB[:books].exclude(DB[:writers].where(:foo).exists) > > Thanks, > Jeremy > -- You received this message because you are subscribed to the Google Groups "sequel-talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to sequel-talk+unsubscr...@googlegroups.com. To post to this group, send email to sequel-talk@googlegroups.com. Visit this group at https://groups.google.com/group/sequel-talk. For more options, visit https://groups.google.com/d/optout.
