primaryKey property

Set<Column<Object>>? get primaryKey

Override this to specify custom primary keys:

class IngredientInRecipes extends Table {
  @override
  Set<Column> get primaryKey => {recipe, ingredient};

  IntColumn get recipe => integer();
  IntColumn get ingredient => integer();

  IntColumn get amountInGrams => integer().named('amount');
}

The getter must return a set literal using the => syntax so that drift's generator can understand the code. Also, please note that it's an error to have an BuildIntColumn.autoIncrement column and a custom primary key. As an auto-incremented IntColumn is recognized by drift to be the primary key, doing so will result in an exception thrown at runtime.

This getter always describes primary key configured as a table constraint. To inspect the resolved primary key of tables, use GeneratedTableExtension.resolvedPrimaryKey instead.

Implementation

Set<Column>? get primaryKey => null;