Question

I have two tables in my SQL DB:

I want to select Libelle_Collection,Libelle_Editeur from all records in the two tables where the Id_Editeur = Id_Editeur_Editeur .

I tried this code :

select Id_Collection, Libelle_Collection,Libelle_Editeur from Collection_,Editeur where Id_Editeur = Id_Editeur_Editeur

The is the result I get :

1 | yyyyyyy | rfer

but it only shows one row where the Id_Editeur_Editeur = 1, I want to show all records even if Id_Editeur_Editeur = NULL.

And the is the result that I want :

1 | yyyyyyy | rfer

3 | tytutuyutu | NULL

4 | tutyuyr | NULL

Answer 1

I think you need a LEFT JOIN:

select Id_Collection,     
      Libelle_Collection,
      Libelle_Editeur 
from Collection_ c
Left join Editeur e
     On c.Id_Editeur_Editeur = e.Id_Editeur