MSSQL Server: exclude microsoft tools procedures/functions from empty schema detection

[JeanRev]

SQL Server Management Studio automatically creates some procedures and function (eg. sp_alterdiagram, sp_renamediagram, fn_diagramobjects, etc.) for dealing with database diagrams.

Those objects are showing up in the INFORMATION_SCHEMA.ROUTINES view, which in turn will cause the schema to be considered non empty by Flyway. Strictly speaking, they are indeed user-defined objects, but their handling should be (in my opinion) kept outside of the versioning system.

SQL Server Studio will actually list those procedures and functions as "System" objects, relying on the "microsoft_database_tools_support" extended property in addition to the "is_ms_shipped" object field (see: http://stackoverflow.com/questions/1976248/how-do-i-list-all-non-system-stored-procedures ).

I propose to implement the same kind of check in the doEmpty() of the SQLServerSchema class.

[axelfontaine]

Yes, that makes sense. This could also be used for clean by explicitly excluding those.

[axelfontaine]

Would you like to contribute a PR for this?

[JeanRev]

Yes, I should be able to find some time for this.

[axelfontaine]

Perfect! Looking forward to it!

[axelfontaine]

@JeanRev See my comments on #1272