如何将时态表添加到 EF Code-First DBContext？

Question

I want to add SQL temporal tables to my project in DBContext not in migration file? How to achieve it? Edit: I've added it to seed function but it's still not working

 protected override void Seed(MSDBContext context)
    {
        string sql = @"  ALTER TABLE dbo.Workshops

 ADD SysStartTime datetime2 GENERATED ALWAYS AS ROW START  
  CONSTRAINT DF_Workshops_SysStartTime DEFAULT SYSUTCDATETIME() NOT NULL,
  SysEndTime datetime2 GENERATED ALWAYS AS ROW END 
  CONSTRAINT DF_Workshops_SysEndTime DEFAULT CONVERT (DATETIME2, '9999-12-31 23:59:59') NOT NULL,
         PERIOD FOR SYSTEM_TIME (SysStartTime, SysEndTime)
  GO

  ALTER TABLE dbo.Workshops
      SET (SYSTEM_VERSIONING = ON (HISTORY_TABLE = dbo.WorkshopsHistory))
  GO";
        context.Database.ExecuteSqlCommand(sql);

        context.SaveChanges();

        context.Configuration.LazyLoadingEnabled = false;
    }

Answer 1

You can run adhoc sql queries if you wanted to just create tables.

using (var ctx = new DBDataContext())
{
    var rowsEffected = ctx.Database.ExecuteSqlCommand("YOUR SQL TO ADD TABLES");
}

If this doesn't work, you dont have to use EF, you could use good old ADO.NET sql client classes to run queries.