Nullable date aggregates

drift/CHANGELOG.md

@@ -1,7 +1,8 @@
-## 1.8.0-dev
+## 2.0.0-dev
 
 - Consistently handle transaction errors like a failing `BEGIN` or `COMMIT`
   across database implementations.
+- Fix nullability of `min`, `max` and `avg` in the Dart query builder.
 
 ## 1.7.0
 

drift/lib/src/runtime/query_builder/expressions/aggregate.dart

@@ -159,21 +159,21 @@ extension BigIntAggregates<DT extends BigInt> on Expression<DT?> {
 extension DateTimeAggregate on Expression<DateTime?> {
   /// Return the average of all non-null values in this group.
   /// {@macro drift_aggregate_filter}
-  Expression<DateTime> avg({Expression<bool?>? filter}) =>
+  Expression<DateTime?> avg({Expression<bool?>? filter}) =>
       secondsSinceEpoch.avg(filter: filter).roundToInt().dartCast();
 
   /// Return the maximum of all non-null values in this group.
   ///
   /// If there are no non-null values in the group, returns null.
   /// {@macro drift_aggregate_filter}
-  Expression<DateTime> max({Expression<bool?>? filter}) =>
+  Expression<DateTime?> max({Expression<bool?>? filter}) =>
       _AggregateExpression('MAX', [this], filter: filter);
 
   /// Return the minimum of all non-null values in this group.
   ///
   /// If there are no non-null values in the group, returns null.
   /// {@macro drift_aggregate_filter}
-  Expression<DateTime> min({Expression<bool?>? filter}) =>
+  Expression<DateTime?> min({Expression<bool?>? filter}) =>
       _AggregateExpression('MIN', [this], filter: filter);
 }
 

drift/pubspec.yaml

@@ -1,6 +1,6 @@
 name: drift
 description: Drift is a reactive library to store relational data in Dart and Flutter applications.
-version: 1.8.0-dev
+version: 2.0.0-dev
 repository: https://github.com/simolus3/drift
 homepage: https://drift.simonbinder.eu/
 issue_tracker: https://github.com/simolus3/drift/issues