Add utility for reading columns with converter

drift/CHANGELOG.md

@@ -4,6 +4,8 @@
 - Add the `@TableIndex` annotation for table classes to add an index to the
   table.
 - Support `json_each` and `json_tree`.
+- Add `TypedResult.readWithConverter` to read a column with a type converter
+  from a join result row.
 
 ## 2.11.1
 

drift/lib/src/runtime/query_builder/statements/select/select.dart

@@ -214,4 +214,13 @@ class TypedResult {
         'Invalid call to read(): $expr. This result set does not have a column '
         'for that expression.');
   }
+
+  /// Reads a column that has a type converter applied to it from the row.
+  ///
+  /// This calls [read] internally, which reads the column but without applying
+  /// a type converter.
+  D? readWithConverter<D, S extends Object>(
+      GeneratedColumnWithTypeConverter<D, S> column) {
+    return column.converter.fromSql(read<S>(column));
+  }
 }

drift/test/database/statements/join_test.dart

@@ -62,6 +62,7 @@ void main() {
           't.content': 'content',
           't.target_date': date.millisecondsSinceEpoch ~/ 1000,
           't.category': 3,
+          't.status': 'workInProgress',
           'c.id': 3,
           'c.desc': 'description',
           'c.description_in_upper_case': 'DESCRIPTION',
@@ -85,6 +86,7 @@ void main() {
           content: 'content',
           targetDate: date,
           category: 3,
+          status: TodoStatus.workInProgress,
         ));
 
     expect(
@@ -101,6 +103,9 @@ void main() {
     expect(row.read(todos.id), 5);
     expect(row.read(categories.description), 'description');
 
+    expect(row.read(todos.status), 'workInProgress');
+    expect(row.readWithConverter(todos.status), TodoStatus.workInProgress);
+
     verify(executor.runSelect(argThat(contains('DISTINCT')), any));
   });