Migration for Sequence not working on ASP.NET Core 2.1
.net-core asp.net-core entity-framework-core postgresql
Question
I am using these packages:
<PackageReference Include="Microsoft.EntityFrameworkCore" Version="2.1.2" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="2.1.2" />
<PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="2.1.2" />
<PackageReference Include="Microsoft.AspNetCore.Mvc" Version="2.1.1" />
My code:
// generate id
modelBuilder.HasSequence("UNIQUEIdGenerator", schema: "public")
.StartsAt(2000000000)
.IncrementsBy(1);
// TestId is not primary key
modelBuilder.Entity<ModelTest>()
.Property(d => d.TestId)
.HasDefaultValueSql("CONCAT('PREFIX', NEXTVAL('\"UNIQUEIdGenerator\"'))");
When I do migration it get success without any error, but when I open PGADMIN and navigate to the database and check the sequence under public schema, it doesn't show me an UNIQUEIdGenerator sequence.
**Note:- Table ModelTest was already there, when i did migration for this sequence
Accepted Answer
I was able to figure out the solution ("Work Around"). If I delete all migration files and regenerate all the migrations file and then update the db it work fine.
Step 1:- delete all the migration file + snapshot file
Step 2:- generate migration files dotnet ef migrations add
Step 3:- dotnet ef migrations script
Now if you search the output it will show you "Create Sequence" sql command, which was missing when i was trying to do with previously.
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