Replace invoices with PostgreSQL

server/db/schema/invoices.sql

@@ -1,9 +1,14 @@
-CREATE TABLE invoices (
-  id INT PRIMARY KEY UNIQUE NOT NULL DEFAULT nextval('invoice_id_seq'),
-  event_id INT NOT NULL REFERENCES events(id),
-  start_date DATE NOT NULL,
-  end_date DATE NOT NULL,
-  is_sent BOOL NOT NULL DEFAULT False,
-  payment_status payment NOT NULL DEFAULT 'none'
-
-);
+CREATE TABLE IF NOT EXISTS public.invoices
+(
+    id integer NOT NULL GENERATED ALWAYS AS IDENTITY ( INCREMENT 1 START 1 MINVALUE 1 MAXVALUE 2147483647 CACHE 1 ),
+    event_id integer NOT NULL,
+    start_date date NOT NULL,
+    end_date date NOT NULL,
+    is_sent boolean NOT NULL DEFAULT false,
+    payment_status payment NOT NULL DEFAULT 'none'::payment,
+    CONSTRAINT invoice_pkey PRIMARY KEY (id),
+    CONSTRAINT event_id FOREIGN KEY (event_id)
+        REFERENCES public.events (id) MATCH SIMPLE
+        ON UPDATE NO ACTION
+        ON DELETE NO ACTION
+);