TOP の使用による挿入行数の制限
TOP キーワードを使用して、挿入する行の数を制限できます。
次の例では NewEmployee テーブルを作成し、Employee テーブルの上位 10 人の従業員の住所データを挿入します。その後、SELECT ステートメントを実行して、NewEmployee テーブルの内容を確認します。
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