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 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