问题
I want to extract a database schema of a MSSQLServer database with Server Management Studio. I use the Extract command "Extract Data-tier Application.."
In the database are several references to another database. Because of this I get the following error.
Error extracting database: Validation of the schema model for data package failed. Error SQL71562: Error validating element [dbo].[x] has an unresolved reference to object [dbo].[y]. External references are not supported when creating a package from this platform.
The problem is, that SSMS uses the SQLPackage.exe with parameter /p:VerifyExtraction=True. When I use the console and call SQLPackage.exe without this Parameter, it uses /p:VerifyExtraction=False by default and I can create the .dacpac file.
Is there a way to configure SSMS to disable verification?
回答1:
I wasn't able to find a method that works in SSMS (2008 R2 or 2012), either, but Visual Studio (2013) with SSDT seems to work: Within VS, go to SQL Server Object Explorer, connect to the server in question, right click the database in question, Extract Data-tier Application, and then adjust the Extract Settings, one of which is "Verify extraction". I don't know why MS doesn't just build that into SSMS.
One somewhat-odd thing I noticed from doing, this, though, is that VS will only extract a .DacPac via this method. Even when you choose to add data to the extract, the extension is still .DacPac. I was under the impression that .DacPacs were solely for Schema Only, while .BacPacs were for Schema + Data. Regardless, after VS created the .DacPac (Schema + Data) file, SSMS was able to import it fine using "Deploy Data-tier Application..." wizard.
回答2:
If you cannot use Visual Studio you can use the command line SqlPackage application to extract the schema from the database. By default, this does not verify the schema (no, I don't know why SSMS and the command line offering have different defaults!). SqlPackage.exe can be found in C:\Program Files (x86)\Microsoft SQL Server\<SQL_VERSION>\DAC\bin.
For example, the following extracts the schema for MyDatabase from the local SQL Server instance and outputs it to a .dacpac file on the local filesystem:
sqlpackage /Action:Extract /SourceDatabaseName:"MyDatabase" /SourceServerName:localhost /TargetFile:"C:\SomeDirectory\MyDatabase.dacpac"
If you want to include schema verification at a later stage, you can set the flag explicitly by adding /p:VerifyExtraction=True to the command line.
Full information on SqlPackage.exe can be found here:
https://msdn.microsoft.com/library/hh550080.aspx
来源：https://stackoverflow.com/questions/26758512/how-to-extract-mssqlserver-database-as-dacpac-without-verifyextraction