SSDT - Exclude certain schema along with unnamed constraint Task: 


Automate database deployment (SSDT/dacpac deployment with CI/CD)
The database is a 3rd party database
It also includes our own customized tables/SP/Fn/Views in separate schemas
Should exclude 3rd party objects while deploying the database project(dacpac) to Production
Thanks to Ed Elliott for the AgileSqlClub.DeploymentFilterContributor. Used the dll to filter out the schema successfully.


Problem:


The 3rd party schema objects(Tables) are defined with unnamed constraints(default / primary key) when creating the tables. Example: 


CREATE TABLE [3rdParty].[MainTable] 
(ID INT IDENTITY(1,1) NOT NULL,
CreateDate DATETIME DEFAULT(GETDATE()))  --There is no name given to default constraint



When I generate the script for deployment using sqlpackage.exe, I see following statements in the generated script.


Generated the script using:

    "C:\Program Files\Microsoft SQL Server\150\DAC\bin\sqlpackage.exe" /action:script /sourcefile:C:\Users\User123\source\repos\DBProject\DBProject\bin\Debug\DBProject.dacpac /TargetConnectionString:"Data Source=MyServer; Initial Catalog=MSSQLDatabase; Trusted_Connection=True" /p:AdditionalDeploymentContributorPaths="C:\Program Files\Microsoft SQL Server\150\DAC\bin\AgileSqlClub.SqlPackageFilter.dll" /p:AdditionalDeploymentContributors=AgileSqlClub.DeploymentFilterContributor /p:AdditionalDeploymentContributorArguments="SqlPackageFilter=IgnoreSchema(3rdParty)" /outputpath:"c:\temp\script_AfterDLL.sql"


Script Output:

/*
Deployment script for MyDatabase

This code was generated by a tool.
Changes to this file may cause incorrect behavior and will be lost if
the code is regenerated.
*/
...
...
GO
PRINT N'Dropping unnamed constraint on [3rdParty].[MainTable]...';


GO
ALTER TABLE [3rdParty].[MainTable] DROP CONSTRAINT [DF__MainTabl__Crea__59463169];

...
...
...(towards the end of the script)
ALTER TABLE [3rdParty].[MainTable_2] WITH CHECK CHECK CONSTRAINT [fk_518_t_44_t_9];



I cannot alter 3rd party schema due to company restrictions
There are many lines of unnamed constraint and WITH CHECK CHECK constraints generated in the script.


Question:


How can I be able to remove the lines to DROP unnamed Constraint on 3rd party schemas? - Even though the dll excludes 3rd party schema, it still has these unnamed constraints scripted/deployed. Also, it is not Adding them back too !!
How can I be able to skip/remove generating WITH CHECK CHECK CONSTRAINT on 3rd party schemas


Any suggestions will be greatly helpful.

EDIT:

Also, I found another issue. The deployment will not succeed due to Rows were detected. The schema update is terminating because data loss might occur

Output:

/*
The column [3rdParty].[MainTable_1].[Col1] is being dropped, data loss could occur.

The column [3rdParty].[MainTable_1].[Col2] is being dropped, data loss could occur.

The column [3rdParty].[MainTable_1].[Col3] is being dropped, data loss could occur.

The column [3rdParty].[MainTable_1].[Col4] is being dropped, data loss could occur.
*/

IF EXISTS (select top 1 1 from [3rdParty].[MainTable_1])
    RAISERROR (N'Rows were detected. The schema update is terminating because data loss might occur.', 16, 127) WITH NOWAIT

GO
You can use utility DacpacTool to remove the schema completely from a dacpac file - I wrote it to do exactly this (among other things). It is quite rough on the edges so far, but it works.


Extract dacpac from target database to MSSQLDatabase.dacpac
Create a file blacklist.txt with one line: &lt;References Name="\[SchemaThatYouWantRemoved]
DacpacTool.exe filter -f MSSQLDatabase.dacpac -b blacklist.txt
DacpacTool.exe filter -f DBProject.dacpac -b blacklist.txt
Script the diff between the two dacpacs. DeploymentFilterContributor is no longer needed: sqlpackage.exe /action:script /sourcefile:DBProject.dacpac /TargetFile:"MSSQLDatabase.dacpac" /outputpath:"c:\temp\script_AfterDLL.sql"