Hello, Thx for all the feedback. After googling that, I saw this link that can be a way I can go. https://stackoverflow.com/questions/51279588/sort-tables-in-order-of-dependency-postgres <https://stackoverflow.com/questions/51279588/sort-tables-in-order-of-dependency-postgres>
Le dim. 3 oct. 2021 à 22:33, David G. Johnston <david.g.johns...@gmail.com> a écrit : > > > On Sun, Oct 3, 2021, 00:48 FOUTE K. Jaurès <jauresfo...@gmail.com> wrote: > >> Hello, >> >> I want to order tables based on the foreign key so that I can delete >> tables one by one without facing "ERROR: update or delete on table >> "table" violates foreign key constraint. DETAIL: Key is still referenced >> from table" >> > > As others have said this is why on delete cascade exists. Unfortunately > this does require some advanced planning as changing it on the fly doesn't > really work. > > I do not believe there is a built-in way to return an ordered listing of > dependent relations given a base relation as an input. But the catalog > entries do exist should you wish to build such yourself. > > That said maybe deferred constraint evaluation will work so that at least > the order doesn't matter. But you still.would.need to know which tables to > write delete commands for. > > There is some recent discussion on making this work in a more > user-friendly away but that would be only available in v15 at best. > > David J. > > >> -- Jaurès FOUTE
