發行項
09/24/2010

使用 TOP 來限制插入的資料列

您可以使用 TOP 關鍵字來限制插入的資料列數。

下例會建立 NewEmployee 資料表，並在其中插入 Employee 資料表的前 10 位員工的地址資料。然後執行 SELECT 陳述式以驗證 NewEmployee 資料表的內容。

USE AdventureWorks;
GO
IF OBJECT_ID (N'HumanResources.NewEmployee', N'U') IS NOT NULL
    DROP TABLE HumanResources.NewEmployee;
GO
CREATE TABLE HumanResources.NewEmployee
(
    EmployeeID int NOT NULL,
    LastName nvarchar(50) NOT NULL,
    FirstName nvarchar(50) NOT NULL,
    Phone 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 TOP (10) INTO HumanResources.NewEmployee 
    SELECT
       e.EmployeeID, c.LastName, c.FirstName, c.Phone,
       a.AddressLine1, a.City, sp.StateProvinceCode, 
       a.PostalCode, e.CurrentFlag
    FROM HumanResources.Employee e
        INNER JOIN HumanResources.EmployeeAddress AS ea
        ON e.EmployeeID = ea.EmployeeID
        INNER JOIN Person.Address AS a
        ON ea.AddressID = a.AddressID
        INNER JOIN Person.StateProvince AS sp
        ON a.StateProvinceID = sp.StateProvinceID
        INNER JOIN Person.Contact as c
        ON e.ContactID = c.ContactID;
GO
SELECT  EmployeeID, LastName, FirstName, Phone,
        AddressLine1, City, State, PostalCode, CurrentFlag
FROM HumanResources.NewEmployee;
GO