How to get the database update script from the last migration?

Can't update database using EF Migrations after updating to EF 6.0.0-alpha

OK. I have found the solution. It appears that EF expects the Primary Key constraint of ...__MigrationHistory... table to have the name ...PK_dbo.__MigrationHistory.... but it is ...PK___MigrationHistory.......So the following sql statements will do the trick....ALTER TABLE __MigrationHistory drop CONSTRAINT PK___MigrationHistory ALTER TABLE __Migr...

How to prevent data loss when I want to update database by using db-migration?

You can add sql to fix the data in a way that is acceptable to you. You need to ensure that the alter statements generated BY EF do not cause data loss....Use the ...Sql... method in a migration to run your own sql:...public override void Up() { //Add this to your migration... Sql("UPDATE dbo.Table SET Name = LEFT(Name, 25) WHERE LEN(Name) ...

Entity Framework 6 Update-Database fails for migration created with -IgnoreChanges

I figured this out....When I applied the Migration, it put the Migration History table in the same default schema as the model. However, when I tried to roll it back, it was looking for the Migration History in the connected user's schema. Since it wasn't there, it thought the database was at version 0....I created an OracleDbConfiguration class ...

Database applies ALL previous migrations on update and NOT just the new one

One issue that can cause migrations to rerun is if your context key changes which can happen during refactoring. There are a couple of ways to solve this:...1) Update the old records in __MigrationHistory with the new values:...UPDATE [dbo].[__MigrationHistory] SET [ContextKey] = ‘New_Namespace.Migrations.Configuration’ WHERE [ContextKey] =...

How do I rename the last entity framework migration applied on the database

You cannot rename after applying a migration to Database. But you can delete and add another migration with same name or other name....First reset the migration to last migration... PM> update-database -TargetMigration:{lastmigrationname} ...If this is the first migration then... PM> update-database -TargetMigration:0 ...Delete the existing mig...

Migration to/from not found while creating migration script with ASP.NET Core tools

Ok I figured it out. ...from... is not an option name and on its place should come directly the migration name....Working command examples below:...dotnet ef migrations script Initial -o student.sql...or also is valid ...dotnet ef migrations script 20160924174811_Initial -o student2.sql

EntityFrameworkCore how to run "Update-Database" & "Add-Migration" from Visual Studio Code (VSCode)

Visual Studio Code doesn't support the running of Package Manager Console commands. That integration is only available in the Visual Studio. You will have to use the Command Line Interface (CLI) instead: ...http://www.learnentityframeworkcore.com/migrations/commands/cli-commands

Entity Framework Core 2.0 migrations update database with seed data throwing error

If you are in the Ef Core 2.0 you need to kwno this:...In 2.0 projects using EF Core 2.0, Program.BuildWebHost is invoked to obtain the application services. Unlike 1.x, this has the additional side effect of invoking Startup.Configure. If your 1.x app invoked database initialization code in its Configure method, unexpected problems can occ...

Deleted database & migration file, can't make new migrations nor revert old migrations, what now?

If you dropped the database then it's easy. Delete the migrations folder....Then run...add-migration Initial...update-database...Also, I tend to remove any ...<Compile Remove="" />... from the project file.

How to run "dotnet ef migrations script" from the last migration

Is there any way to generate the script from the last migration without specifying its name?...As I know, it's necessary for us to specify the name when we try to generate script from last migration, unless we have only one migration....See ...the details... about ...dotnet ef migrations script...:...Arguments:...From...: ...The starting migratio...