VS2010数据库项目部署 - “SqlDeployTask”任务意外失败，NullReferenceException

我有许多SQL Server 2008数据库项目在Visual Studio 2010中的解决方案。我试图做一个“部署解决方案”，我发现了以下错误数据库pojects之一：VS2010数据库项目部署 - “SqlDeployTask”任务意外失败，NullReferenceException

------ Deploy started: Project: MyDBProj, Configuration: Sandbox Any CPU ------ 
C:\Program Files\MSBuild\Microsoft\VisualStudio\v10.0\TeamData\Microsoft.Data.Schema.TSqlTasks.targets(120,5): Error MSB4018: The "SqlDeployTask" task failed unexpectedly. 
System.NullReferenceException: Object reference not set to an instance of an object. 
    at Microsoft.Data.Schema.Sql.SchemaModel.SqlModelComparerBase.VariableSubstitution(SqlScriptProperty propertyValue, IDictionary`2 variables, Boolean& isChanged) 
    at Microsoft.Data.Schema.Sql.SchemaModel.SqlModelComparerBase.ArePropertiesEqual(IModelElement source, IModelElement target, ModelPropertyClass propertyClass, ModelComparerConfiguration configuration) 
    at Microsoft.Data.Schema.SchemaModel.ModelComparer.CompareProperties(IModelElement sourceElement, IModelElement targetElement, ModelComparerConfiguration configuration, ModelComparisonChangeDefinition changes) 
    at Microsoft.Data.Schema.SchemaModel.ModelComparer.CompareElementsWithoutCompareName(IModelElement sourceElement, IModelElement targetElement, ModelComparerConfiguration configuration, Boolean parentExplicitlyIncluded, Boolean compareElementOnly, ModelComparisonResult result, ModelComparisonChangeDefinition changes) 
    at Microsoft.Data.Schema.SchemaModel.ModelComparer.CompareElementsWithSameType(IModelElement sourceElement, IModelElement targetElement, ModelComparerConfiguration configuration, ModelComparisonResult result, Boolean ignoreComparingName, Boolean parentExplicitlyIncluded, Boolean compareElementOnly, Boolean compareFromRootElement, ModelComparisonChangeDefinition& changes) 
    at Microsoft.Data.Schema.SchemaModel.ModelComparer.CompareChildren(IModelElement sourceElement, IModelElement targetElement, ModelComparerConfiguration configuration, Boolean parentExplicitlyIncluded, Boolean compareParentElementOnly, ModelComparisonResult result, ModelComparisonChangeDefinition changes, Boolean isComposing) 
    at Microsoft.Data.Schema.SchemaModel.ModelComparer.CompareElementsWithoutCompareName(IModelElement sourceElement, IModelElement targetElement, ModelComparerConfiguration configuration, Boolean parentExplicitlyIncluded, Boolean compareElementOnly, ModelComparisonResult result, ModelComparisonChangeDefinition changes) 
    at Microsoft.Data.Schema.SchemaModel.ModelComparer.CompareElementsWithSameType(IModelElement sourceElement, IModelElement targetElement, ModelComparerConfiguration configuration, ModelComparisonResult result, Boolean ignoreComparingName, Boolean parentExplicitlyIncluded, Boolean compareElementOnly, Boolean compareFromRootElement, ModelComparisonChangeDefinition& changes) 
    at Microsoft.Data.Schema.SchemaModel.ModelComparer.CompareChildren(IModelElement sourceElement, IModelElement targetElement, ModelComparerConfiguration configuration, Boolean parentExplicitlyIncluded, Boolean compareParentElementOnly, ModelComparisonResult result, ModelComparisonChangeDefinition changes, Boolean isComposing) 
    at Microsoft.Data.Schema.SchemaModel.ModelComparer.CompareElementsWithoutCompareName(IModelElement sourceElement, IModelElement targetElement, ModelComparerConfiguration configuration, Boolean parentExplicitlyIncluded, Boolean compareElementOnly, ModelComparisonResult result, ModelComparisonChangeDefinition changes) 
    at Microsoft.Data.Schema.SchemaModel.ModelComparer.CompareElementsWithSameType(IModelElement sourceElement, IModelElement targetElement, ModelComparerConfiguration configuration, ModelComparisonResult result, Boolean ignoreComparingName, Boolean parentExplicitlyIncluded, Boolean compareElementOnly, Boolean compareFromRootElement, ModelComparisonChangeDefinition& changes) 
    at Microsoft.Data.Schema.SchemaModel.ModelComparer.CompareAllElementsForOneType(ModelElementClass type, ModelComparerConfiguration configuration, ModelComparisonResult result, Boolean compareOrphanedElements) 
    at Microsoft.Data.Schema.SchemaModel.ModelComparer.CompareStore(ModelStore source, ModelStore target, ModelComparerConfiguration configuration) 
    at Microsoft.Data.Schema.Build.SchemaDeployment.CompareModels() 
    at Microsoft.Data.Schema.Build.SchemaDeployment.PrepareBuildPlan() 
    at Microsoft.Data.Schema.Build.SchemaDeployment.Execute(Boolean executeDeployment) 
    at Microsoft.Data.Schema.Build.SchemaDeployment.Execute() 
    at Microsoft.Data.Schema.Tasks.DBDeployTask.Execute() 
    at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute() 
    at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(ITaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask, Boolean& taskResult) 
    Done executing task "SqlDeployTask" -- FAILED. 
    Done building target "DspDeploy" in project "MyDBProj.dbproj" -- FAILED. 
Done executing task "CallTarget" -- FAILED. 
Done building target "DBDeploy" in project "MyDBProj.dbproj" -- FAILED. 
Done building project "MyDBProj.dbproj" -- FAILED.

有谁知道这可能是导致此？

我的项目被配置为创建部署脚本并针对目标数据库运行它。我试过在运行部署之前删除目标数据库并创建一个空数据库。我试过'清理'Visual Studio中的解决方案。

来源

2011-10-04 Tom Hunter

我已经能够重现此错误含有单内联函数如下测试数据库项目：

CREATE FUNCTION [dbo].[Function1] 
() 
RETURNS TABLE 
AS 
    RETURN (
     WITH cte AS (
      SELECT 1 AS [c1] 
      FROM [$(Database3)].[dbo].[Table1] 
     ) 
     SELECT 1 AS [c1] 
     FROM cte 
    )

$(Database3)是一个数据库变量引用另一个数据库项目.dbschema文件。这个dbschema文件包含一个表格 - [Table1]。

看来你需要一个CTE的内联函数，它包含了使用数据库变量的另一个数据库的引用。此外，该功能必须已经存在于目标数据库中。

你可能会在某些情况下出现以下错误（如内联函数不使用CTE）：

------ Deploy started: Project: Database2, Configuration: Debug Any CPU ------ 
Database2.dbschema(0,0): Warning TSD00560: If this deployment is executed, changes to [dbo].[Function2] might introduce run-time errors in [dbo].[Procedure1]. 
    Deployment script generated to: 
C:\temp\Database2\sql\debug\Database2.sql 

    Altering [dbo].[Function2]... 
C:\temp\Database2\sql\debug\Database2.sql(74,0): Error SQL01268: .Net SqlClient Data Provider: Msg 208, Level 16, State 1, Procedure Function2, Line 9 Invalid object name 'Database3.dbo.Table1'. 
    An error occurred while the batch was being executed. 
    Done executing task "SqlDeployTask" -- FAILED. 
    Done building target "DspDeploy" in project "Database2.dbproj" -- FAILED. 
Done executing task "CallTarget" -- FAILED. 
Done building target "DBDeploy" in project "Database2.dbproj" -- FAILED. 
Done building project "Database2.dbproj" -- FAILED. 

Build FAILED.

所以，唯一的解决方法似乎是部署之前删除函数中的目标。

我会引发Microsoft Connect问题。

UPDATE

我创建了一个连接的问题 - https://connect.microsoft.com/VisualStudio/feedback/details/693158/vs2010-database-project-deploy-sqldeploytask-task-failed-unexpectedly-nullreferenceexception

来源

2011-10-05 09:49:16