SSIS执行SQL任务 - 验证MDS模型

Question

我正在开发将数据从数据源抽取到MDS数据模型\实体的SSIS包。

我有一个执行SQL任务，它应该验证MDS Facility实体。

下面是脚本：

DECLARE @ModelName nVarchar(50) = 'DEV ERP' 
DECLARE @Model_id int 
DECLARE @UserName nvarchar(50) = 'System' 
DECLARE @User_ID int 
DECLARE @Version_ID int 
SET @User_ID =  (SELECT ID  
                 FROM mdm.tblUser u 
                 WHERE u.UserName = @UserName) 
SET @Model_ID = (SELECT Model_ID 
                 FROM mdm.viw_SYSTEM_SCHEMA_VERSION 
                 WHERE Model_Name = @ModelName) 
SET @Version_ID = (SELECT MAX(ID) 
                   FROM mdm.viw_SYSTEM_SCHEMA_VERSION 
                   WHERE Model_ID = @Model_ID) 
EXECUTE mdm.udpValidateModel @User_ID, @Model_ID, @Version_ID, 1 

这是我得到的错误尝试执行任务时：

[Execute SQL Task] Error: Executing the query "DECLARE @ModelName nVarchar(50) = 'DEV ERP' DECLAR..." failed with the following error: "SYSERR515|Cannot insert the value NULL into column 'EnterUserID', table 'MDS.mdm.tblEvent'; column does not allow nulls. INSERT fails., @ErrorNumber = 515, @ErrorProcedure = "udpSystemEventSave", line 60". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.

我不知道我怎么能解决这个问题，因为我不能将该变量声明为NOT NULL值。在传递该变量之前，我该如何检查记录是否有效记录？

Answer 1

IF @User_ID IS NULL 
    BEGIN 

     -- Handle it here. 

    END 
;