Actualizar 'README.md'

README.md

@@ -24,3 +24,12 @@ flush privileges;
 update* user set password=PASSWORD('test!23') where user='alex'; 
 flush privileges;
 ```
+
+### Insertar y si existe update
+```sql
+INSERT INTO table (id, name, age) VALUES(1, "A", 19) ON DUPLICATE KEY UPDATE    
+name="A", age=19
+```
+```sql
+INSERT INTO Clientes(Num, Nombre, Telefono) VALUES(1,'Agustin','123456') ON DUPLICATE KEY UPDATE Telefono = VALUES(Telefono);
+```