Some operators can take only one argument. If your argument must include more than one column from the database, you must create an anonymous type to represent the combination. ## Example 1 The ...

How to: Handle Composite Keys in Queries Some operators can take only one argument. If your argument must include more than one column from the database, you must create an anonymous type to represent ...

Now, this app uses surrogate keys extensively (Django doesn't allow composite primary keys and encourages the use of surrogates heavily). For the first migration scripts I've tentatively skipped ...