diff --git a/BasesDeDatos/resumen1.org b/BasesDeDatos/resumen1.org
index 3c54b78..4d99785 100644
--- a/BasesDeDatos/resumen1.org
+++ b/BasesDeDatos/resumen1.org
@@ -43,3 +43,41 @@ FROM (
 ) AS d
 GROUP BY d.DepartamentoId;
 #+end_src
+
+* clase3 Subconsulta con update, insert, delete
+
+** insert
+#+begin_src sql
+INSERT INTO Customers
+    (CustomerID,
+     CompanyName,
+     ContactName,
+     ContactTitle,
+     Address, City, Region, PostalCode, Country, Phone, Fax)
+SELECT
+    SUBSTRING(firstname, 1, 3) + SUBSTRING(lastname, 1, 2) AS CustomerID,
+    lastname                   AS CompanyName,
+    firstname                  AS ContactName,
+    title                      AS ContactTitle,
+    address, city, region, postalcode, country, homephone AS Phone, NULL AS Fax
+FROM Employees;
+#+end_src
+** update
+#+begin_src sql
+DELETE FROM [Order Details]
+WHERE OrderID IN (
+    SELECT OrderID
+    FROM Orders
+    WHERE OrderDate = '2005-04-14'
+);
+#+end_src
+** delete
+#+begin_src sql
+UPDATE Products
+SET UnitPrice = UnitPrice + 2
+WHERE SupplierID IN (
+    SELECT SupplierID
+    FROM Suppliers
+    WHERE Country = 'USA'
+);
+#+end_src