ServerConnection.ExecuteScalar 方法 (StringCollection)
执行一批 Transact-SQL 语句并返回第一行的第一列作为对象值。
命名空间: Microsoft.SqlServer.Management.Common
程序集: Microsoft.SqlServer.ConnectionInfo(在 Microsoft.SqlServer.ConnectionInfo.dll 中)
语法
声明
Public Function ExecuteScalar ( _
sqlCommands As StringCollection _
) As Object()
用法
Dim instance As ServerConnection
Dim sqlCommands As StringCollection
Dim returnValue As Object()
returnValue = instance.ExecuteScalar(sqlCommands)
public Object[] ExecuteScalar(
StringCollection sqlCommands
)
public:
array<Object^>^ ExecuteScalar(
StringCollection^ sqlCommands
)
member ExecuteScalar :
sqlCommands:StringCollection -> Object[]
public function ExecuteScalar(
sqlCommands : StringCollection
) : Object[]
参数
- sqlCommands
类型:StringCollection
一个 StringCollection 系统对象值,该值指定要执行的成批的 Transact-SQL 语句。
返回值
类型:array<Object[]
一个对象数组值,该值指定每个结果集的第一行的第一列。
示例
C#
ServerConnection conn = new ServerConnection();
conn.DatabaseName = "AdventureWorks2012";
StringCollection sqlQuery = new StringCollection();
sqlQuery.Add("SELECT Name FROM Production.Location");
sqlQuery.Add("SELECT CostRate FROM Production.Location");
Object[] costData = conn.ExecuteScalar(sqlQuery);
for (int i = 0; i < costData.Length; i++)
{
Console.WriteLine(costData[i].ToString());
}
PowerShell
$conn = new-object Microsoft.SqlServer.Management.Common.ServerConnection
$conn.DatabaseName = "AdventureWorks2012"
$sqlQuery = new-object System.Collections.Specialized.StringCollection
$sqlQuery.Add("SELECT Name FROM Production.Location")
$sqlQuery.Add("SELECT CostRate FROM Production.Location")
$costData = $conn.ExecuteScalar($sqlQuery)
$i = 0
while ($i -le $costData.Length)
{
Write-Host $costData[$i]
$i++
}
请参阅
参考
Microsoft.SqlServer.Management.Common 命名空间