JetBrains website displays multiple useful features of their Database IDE, including code generation as per https://www.jetbrains.com/datagrip/features/generation.html; However the website does not explicitly declare support for PL/SQL.
Can any DataGrip users give a review in regards to the level of PL/SQL support in the IDE?
For PL/SQL development I personally would recommend plugin Database Navigator for IntelliJ IDEA if you don't want to use "oldshool" IDE-s like SQL Developer etc. Comparing to Datagrip it's more oriented to PL/SQL package development, but if you need to work with triggers - you need Datagrip, as mentioned plugin doesn't support modifying triggers.