There is a much better solution for handling entity framework migration merge conflicts on a similar question.
All you need to do after a merge is to re-scaffold the meta data of the migration in the target branch. That is you do not rescaffold the up/down code, just the state in the resx-file.
add-migration [the_migration_to_rescaffold_metadata_for]
This almost always works. The procedure will fail if a different migration in the merge have changed the database in such a way that the migration is no longer runnable or gives an unexpected result. That being said – I believe that to be a very rare case as most migrations should be auto-generated, or at least not be dependent on other tables that are not changed in the migration itself as well.
One such case where rescaffold state would fail could be:
-
Column foo is an int and rows contain [0, 1, 2]
-
Migration A from branch A change foo to boolean (0 will become false automatically and > 0
will become true) -
Migration B from branch B change foo to string. It expects it to be an int but it is a boolean, the migration will succeed though. Data will be lost since when migration B was created the rows would contain [“0”, “1”, “2”]. When migration A altered column to boolean (and did so successfully and with expected result) the rows will now contain [“0”, “1”, “1”] instead and Migration B will have a different end result than what was observed in Branch B.
There are probably more edge cases where things could go wrong with the solution. But if migrations up/down code is not dependent on things changed by another migration in the merge it should work well to just update the metadata in the migrations.