From 4f38a8793a7876afa7f52a3f1f22e8240de5e88c Mon Sep 17 00:00:00 2001
From: medina5 <emmanuel.medina@univ-lorraine.fr>
Date: Sun, 16 Nov 2025 09:10:10 +0100
Subject: [PATCH] vues

---
 banque.functions.md  | 25 ++++++++++++++++++++++++
 banque.md            | 22 ++++++---------------
 banque.procedures.md | 46 ++++++++++++++++++++++++++++++++++++++++++++
 banque.vues.md       | 27 ++++++++++++++++++++++++++
 4 files changed, 104 insertions(+), 16 deletions(-)
 create mode 100644 banque.functions.md
 create mode 100644 banque.vues.md

diff --git a/banque.functions.md b/banque.functions.md
new file mode 100644
index 0000000..775e848
--- /dev/null
+++ b/banque.functions.md
@@ -0,0 +1,25 @@
+# Fonctions
+
+```sql
+insert into exchange_rate values
+  ('EUR', '1999-01-04', 1),
+  ('USD', '1999-01-04', 1.1789),
+  ('YEN', '1999-01-04', 133.73);
+```
+
+```sql
+create or replace function latest_exchange_rate (
+  p_code text,
+  p_date date
+)
+returns decimal
+language sql
+as $$
+select rate
+  from exchange_rate
+  where currency_code = p_code
+    and date < p_date
+    order by date desc
+    limit 1;
+$$;
+```
diff --git a/banque.md b/banque.md
index 5d71334..09cc7a7 100644
--- a/banque.md
+++ b/banque.md
@@ -24,9 +24,13 @@ Pour les entités vous utiliserez le singuler et écrirez le tout en minuscule.
 
 - Séance 1 : [Le schéma Entités-Relations](banque.erd.md)
 
-- Séance 2 : [Implémentation du modèle](banques.tables.md)
+- Séance 2 :
+  - [Implémentation du modèle](banques.tables.md)
+  - [Les procédures](banques.procedures.md)
 
-- Séance 3 : [Les procédures](banques.procedures.md)
+- Séance 3 :
+  - [Les vues](banques.vues.md)
+  - [Les fonctions](banques.functions.md)
 
 Voir les adresses des serveurs [postgreSQL](https://sources.neotech.fr/Universite/tp/src/branch/main/geii3_2025.md)
 
@@ -216,21 +220,7 @@ insert into exchange_rate values
 ```
 
 
-#### Dépôts et retraits
 
-```sql
-create or replace procedure add_retrait (
-  p_account_id bigint,
-  p_amount decimal
-)
-language plpgsql
-as $$
-declare
-  v_id bigint
-begin
-end;
-$$;
-```
 
 
 
diff --git a/banque.procedures.md b/banque.procedures.md
index f849f0e..f64287d 100644
--- a/banque.procedures.md
+++ b/banque.procedures.md
@@ -88,3 +88,49 @@ $$;
 ```sql
 call add_company('Boulangerie de Valorgue', 'FR19803269968', '2014-08-19');
 ```
+
+## d et r
+
+```sql
+create or replace procedure add_depot (
+  p_account_id bigint,
+  p_amount decimal
+)
+language plpgsql
+as $$
+declare
+  v_id bigint;
+begin
+  insert into transaction (amount)
+  values (p_amount)
+  returning id into v_id;
+
+  insert into operation (transaction_id, account_id, amount, direction)
+  values (v_id, p_account_id, p_amount, 'CREDIT');
+
+  raise notice 'Dépôt de % sur le compte %', p_amount, p_account_id;
+end;
+$$;
+```
+
+```sql
+create or replace procedure add_retrait (
+  p_account_id bigint,
+  p_amount decimal
+)
+language plpgsql
+as $$
+declare
+  v_id bigint;
+begin
+  insert into transaction (amount)
+  values (p_amount)
+  returning id into v_id;
+
+  insert into operation (transaction_id, account_id, amount, direction)
+  values (v_id, p_account_id, p_amount, 'DEBIT');
+
+  raise notice 'Retrait de % sur le compte %', p_amount, p_account_id;
+end;
+$$;
+```
diff --git a/banque.vues.md b/banque.vues.md
new file mode 100644
index 0000000..a262c98
--- /dev/null
+++ b/banque.vues.md
@@ -0,0 +1,27 @@
+```sql
+create or replace view holder_detail as
+select h.id, h.type,
+  case
+  when type = 'PERSON' then firstname || ' ' || lastname
+  else name
+  end as nom,
+  case
+  when type = 'PERSON' then age(birthdate)
+  when type = 'COMPANY' then age(c.created_at)
+  end as age
+from holder h
+  left join person p on p.id = h.id
+  left join company c on c.id = h.id;
+```
+
+```sql
+create or replace view account_detail as
+select a.balance,
+  a.balance * ah.share as balance_currency,
+  a.balance * ah.share / latest_exchange_rate(a.currency_code, current_date),
+  a.currency_code,
+  hd.nom
+from account a
+join account_holder ah on ah.account_id = a.id
+join holder_detail hd on ah.holder_id = hd.id;
+```