does postgresql 10 have something similar to sql server's set identity_insert - Mailing list pgsql-novice

using sql, i know it's possible to issue INSERTs with OVERRIDING SYSTEM VALUE clause to fill identity columns with user-specified values. but i'm using an ORM (object-relation mapper) Framework from Microsoft (Entity Framework Core 2.1)  and a C# test data generator library, and i'm generating "data aggregates" that have foreign key relationships so it would be a great convenience if I could save test data with known primary and foreign key values to the database as this would make it easier for me to make assertions about my data.

ideally, i'm looking for something like this:

myDbContext.Database.ExecuteSqlCommand("...");  //ask postgresql to allow explicit id values for inserts from here on

var testData = CreateTestData();

myDbContext.MyEntity.AddRange(testData);

myDbContext.SaveChanges();