首先，你需要创建一个迁移。

First you need to create a migration.

Add-Migration RunSqlScript

然后在生成的迁移文件，你可以写你的SQL。

Then in the generated migration file you can write your SQL.

// PLAIN SQL
Sql("UPDATE dbo.Table SET Created = GETDATE()");

// FROM FILE
var sqlFile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, @"Custom.sql"); 
Sql(File.ReadAllText(sqlFile));

然后运行

Update-Database