Web Reference: 79 You have a default constraint on your column. You need to first drop the constraint, then alter your column. Entity Framework Core allows you to drop down to SQL queries when working with a relational database. SQL queries are useful if the query you want can't be expressed using LINQ, or if a LINQ query causes EF to generate inefficient SQL. SQL queries can return regular entity types or keyless entity types that are part of your model. First, create or modify entity models in C#. Second, run a migration command to generate a migration file or script based on the model changes. Third, apply the migration to the database to update the database schema.
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