![]() We can execute these SQL Scripts in the production server to bring the database in sync with the model. So to rollback to B you could use either: Update-Database -TargetMigration:"B"Īccording to this related answer on a similar question, correct command is -Target for EF Core 1.1 while it is -Migration for EF Core 2.0. EF Core Script Migration Leave a Comment / / 6 minutes of reading EF Core Data seed Logging in EF Core In this tutorial let us explore the script migration in EF core to generate SQL Scripts. Likewise, if you have applied migrations A, B, C, D, and E (in that order), then the ordinal 1 should refer to A, ordinal 2 should refer to B, and so on. So in that case, you have to use the 0 (ordinal) value. For example, the previous command starts the postgresql service and runs bash as its command. If you want to rollback all migrations and start over, you can use: Update-Database -Target:0Ġ, above, would rollback even the FIRST migration ( this is a destructive command-be sure you know what you're doing before you use it!)-something you cannot do if you use the syntax above that requires the name of the target migration (the name of the 0th migration doesn't exist before a migration is applied!). But now, my migration sql scripts arent runned anymore. Thus, if you use GET-MIGRATIONS and you find that you have A, B, C, D, and E, then using this command will rollback E and D to get you to C: Update-Database -TargetMigration:"C"Īlso, unless anyone can comment to the contrary, I noticed that you can use an ordinal value and the short -Target switch (thus, -Target is the same as -TargetMigration). What you are doing above is saying that you want to rollback all migrations UNTIL you're left with the migration specified. I've applied authorization to this method so it requires 'deployment admin' role. This is excluded from the action filter mentioned above that rejects requests and is instead only available when there are pending migrations to apply. Use the Add-Migration command to create a new migration. ![]() The commands are an extension to the cross-platform dotnet command, which is part of the. For example, they create migrations, apply migrations, and generate code for a model based on an existing database. ![]() When you enter a command to roll back the update, Migrations calls the Down. An MVC controller with an Action method that can be called to Apply the pending EF core migrations. Use EF Core migration flow to apply changes from models to the database. The command-line interface (CLI) tools for Entity Framework Core perform design-time development tasks. I want to add some clarification to this thread: Update-Database -TargetMigration:"name_of_migration" Migrations call the Up method to implement the data model changes for a migration. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |