Limitar el número de filas insertadas mediante TOP
Puede utilizar la palabra clave TOP para limitar el número de filas que se insertan.
En el ejemplo siguiente se crea la tabla NewEmployee y se insertan datos de direcciones de los 10 mejores empleados de la tabla Employee. A continuación se ejecuta la instrucción SELECT para verificar el contenido de la tabla NewEmployee.
USE AdventureWorks2008R2;
GO
IF OBJECT_ID (N'HumanResources.NewEmployee', N'U') IS NOT NULL
DROP TABLE HumanResources.NewEmployee;
GO
CREATE TABLE HumanResources.NewEmployee
(
BusinessEntityID int NOT NULL,
LastName nvarchar(50) NOT NULL,
FirstName nvarchar(50) NOT NULL,
PhoneNumber Phone NULL,
AddressLine1 nvarchar(60) NOT NULL,
City nvarchar(30) NOT NULL,
State nchar(3) NOT NULL,
PostalCode nvarchar(15) NOT NULL,
CurrentFlag Flag
);
GO
-- Insert 10 random rows into the table NewEmployee.
INSERT TOP (10) INTO HumanResources.NewEmployee
SELECT
e.BusinessEntityID, c.LastName, c.FirstName, pp.PhoneNumber,
a.AddressLine1, a.City, sp.StateProvinceCode,
a.PostalCode, e.CurrentFlag
FROM HumanResources.Employee e
INNER JOIN Person.BusinessEntityAddress AS bea
ON e.BusinessEntityID = bea.BusinessEntityID
INNER JOIN Person.Address AS a
ON bea.AddressID = a.AddressID
INNER JOIN Person.PersonPhone AS pp
ON e.BusinessEntityID = pp.BusinessEntityID
INNER JOIN Person.StateProvince AS sp
ON a.StateProvinceID = sp.StateProvinceID
INNER JOIN Person.Person as c
ON e.BusinessEntityID = c.BusinessEntityID;
GO
SELECT BusinessEntityID, LastName, FirstName, PhoneNumber,
AddressLine1, City, State, PostalCode, CurrentFlag
FROM HumanResources.NewEmployee;
GO
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