Метод ServerConnection.ExecuteScalar (String)
Executes a Transact-SQL statement and returns the first column of the first row as an object value.
Пространство имен: Microsoft.SqlServer.Management.Common
Сборка: Microsoft.SqlServer.ConnectionInfo (в Microsoft.SqlServer.ConnectionInfo.dll)
Синтаксис
'Декларация
Public Function ExecuteScalar ( _
sqlCommand As String _
) As Object
'Применение
Dim instance As ServerConnection
Dim sqlCommand As String
Dim returnValue As Object
returnValue = instance.ExecuteScalar(sqlCommand)
public Object ExecuteScalar(
string sqlCommand
)
public:
Object^ ExecuteScalar(
String^ sqlCommand
)
member ExecuteScalar :
sqlCommand:string -> Object
public function ExecuteScalar(
sqlCommand : String
) : Object
Параметры
- sqlCommand
Тип: System.String
A String value that specifies the Transact-SQL command to be executed.
Возвращаемое значение
Тип: System.Object
An Object system object value that specifies the first column of the first row of the result set.
Примеры
C#
ServerConnection conn = new ServerConnection();
conn.DatabaseName = "AdventureWorks2012";
costData = conn.ExecuteScalar("SELECT CostRate FROM Production.Location");
Console.WriteLine(costData.ToString());
PowerShell
$conn = new-object Microsoft.SqlServer.Management.Common.ServerConnection
$conn.DatabaseName = "AdventureWorks2012"
$reader = $conn.ExecuteScalar("SELECT CostRate FROM Production.Location")
Write-Host $reader