procedures

banque.procedures.md

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+# Les procédures
+
+Les procédures permettent d'exécuter plusieurs opérations en un seul appel dans un bloc de code
+
+Si une erreur survient **rien** n'est enregistré
+
+## Banque
+
+```sql
+create or replace procedure add_bank (
+  name text
+)
+language plpgsql
+as $$
+declare
+  v_holder_id bigint;
+begin
+
+  insert into holder(type) values ('BANK')
+  returning id into v_holder_id;
+
+  insert into bank(id, name)
+  values (v_holder_id, name);
+
+  raise notice 'Titulaire créé : % = %',
+    v_holder_id, name;
+end;
+$$;
+```
+
+## Individu
+
+```sql
+create or replace procedure add_person (
+  p_firstname text,
+  p_lastname text,
+  p_birthdate date
+)
+language plpgsql
+as $$
+declare
+  v_holder_id bigint;
+begin
+
+  insert into holder(type) values ('PERSON')
+  returning id into v_holder_id;
+
+  insert into person(id, firstname, lastname, birthdate)
+  values (v_holder_id, p_firstname, p_lastname, p_birthdate);
+
+  raise notice 'Titulaire créé : % = % %',
+    v_holder_id, p_firstname, p_lastname;
+end;
+$$;
+```
+
+```sql
+call add_person('Françoise', 'Zanetti', '1995-04-12');
+call add_person('Justin', 'Hébrard', '1993-03-11');
+```
+
+## Société
+
+```sql
+create or replace procedure add_company (
+ p_name text,
+ p_registration_number text,
+ p_created_at date
+)
+language plpgsql
+as $$
+declare
+  v_holder_id bigint;
+begin
+
+  insert into holder(type) values ('COMPANY')
+  returning id into v_holder_id;
+
+  insert into company(id, name, registration_number, created_at)
+  values (v_holder_id, p_name, p_registration_number, p_created_at);
+
+  raise notice 'Titulaire créé : % = % %',
+    v_holder_id, p_name, p_registration_number;
+end;
+$$;
+```
+
+```sql
+call add_company('Boulangerie de Valorgue', 'FR19803269968', '2014-08-19');
+```