Question

public class Start1
{
  public EventHandler FrameAcquired
  {
    add 
    {
      this.camera.FrameAcquired += value;
    }
    remove
    {
      this.camera.FrameAcquired -= value;
    }
}

当我尝试在SQL中运行报告时，是否一直收到此错误消息？有什么想法吗？

Answer 1

问题是您必须首先定义1.0。尝试在您的代码块前面添加：

LocationId

Answer 2

在运行以下主查询之前，您需要声明@locationID：

declare @LocationId int = 10;
SELECT * FROM dbo.vwAlarmAssetGroupLocationReport
WHERE (LocationID = CAST(COALESCE(@LocationId, LocationId) AS uniqueidentifier) OR TopLocationId = CAST(COALESCE(@LocationId, TopLocationId) AS uniqueidentifier))
AND DateCreated Between '2018-10-23' AND '2018-10-25'
AND AssetGroupId = '8E99BAFB-739A-E411-B54B-40F2E9985B7A'
ORDER BY DateCreated

还请注意，BETWEEN关键字后的AND关键字不应放在引号中。

必须声明标量变量“ @LocationId”

2 个答案: