simolus3 / drift

Drift is an easy to use, reactive, typesafe persistence library for Dart & Flutter.

Drift

Core	Generator

Drift is a reactive persistence library for Flutter and Dart, built on top of SQLite. Drift is

• Flexible: Drift lets you write queries in both SQL and Dart, providing fluent apis for both languages. You can filter and order results or use joins to run queries on multiple tables. You can even use complex SQL features like WITH and WINDOW clauses.
• 🔥 Feature rich: Drift has builtin support for transactions, schema migrations, complex filters and expressions, batched updates and joins. We even have a builtin IDE for SQL!
• 📦 Modular: Thanks to builtin support for daos and imports in SQL files, drift helps you keep your database code simple.
• 🛡️ Safe: Drift generates type-safe code based on your tables and queries. If you make a mistake in your queries, drift will find it at compile time and provide helpful and descriptive lints.
• ⚡ Fast: Even though drift lets you write powerful queries, it can keep up with the performance of key-value stores like shared preferences and Hive. Drift is the only major persistence library with builtin threading support, allowing you to run database code across isolates with zero additional effort.
• Reactive: Turn any SQL query into an auto-updating stream! This includes complex queries across many tables
• ⚙️ Cross-Platform support: Drift works on Android, iOS, macOS, Windows, Linux and the web. This template is a Flutter todo app that works on all platforms.
• 🗡️ Battle tested and production ready: Drift is stable and well tested with a wide range of unit and integration tests. It powers production Flutter apps.

With drift, persistence on Flutter is fun!

To start using drift, read our detailed docs.

If you have any questions, feedback or ideas, feel free to create an issue. If you enjoy this project, I'd appreciate your 🌟 on GitHub.

Sponsors

Drift is proudly Sponsored by Stream 💙

Try the Flutter Chat Tutorial  💬

Working on this project

This repository contains a number of packages making up the drift project, most notably:

• drift: The main runtime for drift, which provides most APIs.
• drift_dev: The compiler for drift tables, databases and daos. It also contains a fully-featured SQL IDE for the Dart analyzer.
• sqlparser: A SQL parser and static analyzer, written in pure Dart. This package can be used without drift to perform analysis on SQL statements. It's on pub at

We use melos to manage the different packages in this repository.

You can install it with dart pub global activate melos. To activate it in this repository, run dart pub get in this directory followed by melos bootstrap.

drift's Issues

Make `single` and `watchSingle` return null when no data exists

Currently, they would throw an exception. Returning null to indicate that there is no result seems more intuitive.

Named parameter defaultValue is not defined for GeneratedRealColumn

Error when putting a default value for a real column

[bug] DefaultValueSerializer can't handle null values

trying to deserialize a null value always throws an error

Encryption Support

I'm looking for database encryption support,

Is this planned for this library?

Can you provide some more examples in the docs?

How are you supposed to use MyDatabase-class? It seems to me that a singleton is the way to go - don't know if all figure that out in the first place.

Then how are you supposed to define migrations? If I just add or remove a field everything works as expected, but what if I want to add a new table and store some of the existing data there and delete the field afterwards?
A common question would be initial data.
There is MigrationStrategy, but I don't know what to define there exactly. And if I have a look at GeneratedDatabase I can't find any use of onFinished.

It would be nice to have some working hello world-ish programs where one could study all aspects of moor :-)

Clarify what kind of code is supported in table definitions

Current readme points out that only a tiny subset is supported, which is not true

Support a double datatype

Generated classes should implement Serializable interface

abstract class Serializable { Map<String, dynamic> toJson() }

defaultValue doesn't work on update replace

default value doesn't work when an existing row is being replaced, with another row where a required field is null

Using with a server

I am guessing that this is designed such that updates to data from the server can't be detected and update the corresponding views that have a SQL watch query on them because you rely on detecting a CUD to the salute database from the user interface ?

Some expressions crash when being used as default constraint

I/flutter ( 8123): error NoSuchMethodError: The getter 'typeSystem' was called on null.
I/flutter ( 8123): Receiver: null
I/flutter ( 8123): Tried calling: typeSystem during open, closing...
I/flutter ( 8123): error NoSuchMethodError: The getter 'typeSystem' was called on null.
I/flutter ( 8123): Receiver: null
I/flutter ( 8123): Tried calling: typeSystem during open, closing...
E/flutter ( 8123): [ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: NoSuchMethodError: The getter 'typeSystem' was called on null.
E/flutter ( 8123): Receiver: null
E/flutter ( 8123): Tried calling: typeSystem
E/flutter ( 8123): #0      Object.noSuchMethod (dart:core-patch/object_patch.dart:50:5)
E/flutter ( 8123): #1      Constant.writeInto (package:moor/src/runtime/expressions/variables.dart:72:35)
E/flutter ( 8123): #2      GeneratedColumn.writeColumnDefinition (package:moor/src/runtime/structure/columns.dart:49:22)
E/flutter ( 8123): #3      Migrator.createTable (package:moor/src/runtime/migration.dart:67:14)
E/flutter ( 8123): <asynchronous suspension>
E/flutter ( 8123): #4      MappedListIterable.elementAt (dart:_internal/iterable.dart:414:29)
E/flutter ( 8123): #5      ListIterator.moveNext (dart:_internal/iterable.dart:343:26)
E/flutter ( 8123): #6      Future.wait (dart:async/future.dart:393:26)
E/flutter ( 8123): #7      Migrator.createAllTables (package:moor/src/runtime/migration.dart:51:19)
E/flutter ( 8123): <asynchronous suspension>
E/flutter ( 8123): #8      _defaultOnCreate (package:moor/src/runtime/migration.dart:14:48)
E/flutter ( 8123): #9      GeneratedDatabase.handleDatabaseCreation (package:moor/src/runtime/database.dart:222:22)
E/flutter ( 8123): #10     FlutterQueryExecutor.ensureOpen.<anonymous closure> (package:moor_flutter/moor_flutter.dart:110:27)
E/flutter ( 8123): #11     _SqfliteDatabaseBase&Object&SqfliteDatabaseMixin.doOpen.<anonymous closure> (package:sqflite/src/database_mixin.dart:661:29)
E/flutter ( 8123): <asynchronous suspension>
E/flutter ( 8123): #12     _SqfliteDatabaseBase&Object&SqfliteDatabaseMixin._runTransaction (package:sqflite/src/database_mixin.dart:433:28)
E/flutter ( 8123): <asynchronous suspension>
E/flutter ( 8123): #13     _SqfliteDatabaseBase&Object&SqfliteDatabaseMixin.transaction.<anonymous closure> (package:sqflite/src/database_mixin.dart:450:14)
E/flutter ( 8123): <asynchronous suspension>
E/flutter ( 8123): #14     _SqfliteDatabaseBase&Object&SqfliteDatabaseMixin.txnSynchronized (package:sqflite/src/database_mixin.dart:275:26)
E/flutter ( 8123): <asynchronous suspension>
E/flutter ( 8123): #15     _SqfliteDatabaseBase&Object&SqfliteDatabaseMixin.txnWriteSynchronized (package:sqflite/src/database_mixin.dart:307:7)
E/flutter ( 8123): #16     _SqfliteDatabaseBase&Object&SqfliteDatabaseMixin.transaction (package:sqflite/src/database_mixin.dart:449:12)
E/flutter ( 8123): #17     _SqfliteDatabaseBase&Object&SqfliteDatabaseMixin.doOpen (package:sqflite/src/database_mixin.dart:651:15)
E/flutter ( 8123): <asynchronous suspension>
E/flutter ( 8123): #18     SqfliteDatabaseOpenHelper.openDatabase (package:sqflite/src/database.dart:32:22)
E/flutter ( 8123): <asynchronous suspension>
E/flutter ( 8123): #19     _SqfliteDatabaseFactoryImpl&Object&SqfliteDatabaseFactoryMixin.openDatabase.<anonymous closure> (package:sqflite/src/factory_mixin.dart:100:43)
E/flutter ( 8123): <asynchronous suspension>
E/flutter ( 8123): #20     ReentrantLock.synchronized.<anonymous closure>.<anonymous closure> (package:synchronized/src/reentrant_lock.dart:33:24)
E/flutter ( 8123): #21     _rootRun (dart:async/zone.dart:1124:13)
E/flutter ( 8123): #22     _CustomZone.run (dart:async/zone.dart:1021:19)
E/flutter ( 8123): #23     _runZoned (dart:async/zone.dart:1516:10)
E/flutter ( 8123): #24     runZoned (dart:async/zone.dart:1463:12)
E/flutter ( 8123): #25     ReentrantLock.synchronized.<anonymous closure> (package:synchronized/src/reentrant_lock.dart:32:24)
E/flutter ( 8123): <asynchronous suspension>
E/flutter ( 8123): #26     BasicLock.synchronized (package:synchronized/src/basic_lock.dart:31:26)
E/flutter ( 8123): <asynchronous suspension>
E/flutter ( 8123): #27     ReentrantLock.synchronized (package:synchronized/src/reentrant_lock.dart:28:17)
E/flutter ( 8123): <asynchronous suspension>
E/flutter ( 8123): #28     _SqfliteDatabaseFactoryImpl&Object&SqfliteDatabaseFactoryMixin.openDatabase (package:sqflite/src/factory_mixin.dart:66:17)
E/flutter ( 8123): #29     openDatabase (package:sqflite/sqflite.dart:146:26)
E/flutter ( 8123): #30     FlutterQueryExecutor.ensureOpen (package:moor_flutter/moor_flutter.dart:107:16)
E/flutter ( 8123): <asynchronous suspension>
E/flutter ( 8123): #31     QueryExecutor.doWhenOpened (package:moor/src/runtime/executor/executor.dart:15:12)
E/flutter ( 8123): #32     SimpleSelectStatement._getWithQuery (package:moor/src/runtime/statements/select.dart:165:49)
E/flutter ( 8123): <asynchronous suspension>
E/flutter ( 8123): #33     SimpleSelectStatement.get (package:moor/src/runtime/statements/select.dart:161:12)
E/flutter ( 8123): <asynchronous suspension>

ERROR PlatformChannel flutter/src/services/platform_channel.dart 300:7

ERROR: MissingPluginException(No implementation found for method getDatabasesPath on channel com.tekartik.sqflite)
package:flutter/src/services/platform_channel.dart 300:7 MethodChannel.invokeMethod
===== asynchronous gap ===========================
dart:async _AsyncAwaitCompleter.completeError
package:flutter/src/services/platform_channel.dart MethodChannel.invokeMethod
===== asynchronous gap ===========================
dart:async _asyncThenWrapperHelper
package:flutter/src/services/platform_channel.dart MethodChannel.invokeMethod
package:sqflite/src/sqflite_impl.dart 18:34 invokeMethod

Add a `toJson` method for generated Table class.

Is it possible to add a toJson method to the generated table class? Because I sometimes need to serialize the table class into json, thank you very much!

Improve coverage collection

Currently, only the tests in moor/tests contribute to the coverage - tests in other packages are run, but not with coverage.
It would be nice to generate a coverage file for each project, bundle them together, and upload that single file to codecov.

Not working with DateTime

I try to insert a row in the table:

However, I get this error.

E/flutter (14884): [ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: type 'DateTime' is not a subtype of type 'int' in type cast
E/flutter (14884): #0      _DefaultValueSerializer.fromJson (package:moor/src/runtime/data_class.dart:53:55)
E/flutter (14884): #1      new Person.fromJson (package:moor_example/model/model.g.dart:77:29)

Why does the library try to convert the DateTime into an int?

Add ability to override generated json field name

My JSON is snake case and my getters are camel case.

I either change my getters to snake case and get a dart warning, or change the generated code to use snake case.

Please add a way to override the JSON key.

  void _writeToJson(StringBuffer buffer) {
    buffer.write('Map<String, dynamic> toJson() {\n return {');

    for (var column in table.columns) {
      final getter = column.dartGetterName;
      buffer.write("'$getter': $getter,");
    }

    buffer.write('};}');
  }

Check whether streams still properly update with table aliases

toJson returns a Map instead of a jsonEncoded String

Similarly, fromJson function takes a Map, instead of a JSON string:

Map<String, dynamic> toJson()
factory Xxx.fromJson(Map<String, dynamic> json)

How can I convert these functions to standard:

String toJson() => jsonEncode(toMap())
factory Xxx.fromJson(String json) => Xxx.fromMap(jsonDecode(json));

sqlparser bug: Error while trying to parse IN clause list literal

SELECT id FROM todos WHERE category IN (1) parses correctly, but adding more comma separated expressions throws the following error:

Error while trying to parse SELECT id FROM todos WHERE category IN (1,2): line 1, column 42: Error: Expected a closing bracket}

1 │ SELECT id FROM todos WHERE category IN (1,2)
  │                                          ^

Concurrent modification during iteration

I was playing with the example project and came across this exception

E/flutter ( 5999): [ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: Concurrent modification during iteration: _LinkedHashMap len:2.
E/flutter ( 5999): #0      _CompactIterator.moveNext (dart:collection/runtime/libcompact_hash.dart:443:7)
E/flutter ( 5999): #1      FollowedByIterator.moveNext (dart:_internal/iterable.dart:855:26)
E/flutter ( 5999): #2      WhereIterator.moveNext (dart:_internal/iterable.dart:438:22)
E/flutter ( 5999): #3      StreamQueryStore.handleTableUpdates (package:moor/src/runtime/executor/stream_queries.dart:94:24)

The changes I made to the example project:

--- moor_flutter/example/lib/widgets/homescreen.dart
+++ moor_flutter/example/lib/widgets/homescreen.dart
@@ -102,7 +102,9 @@
     if (controller.text.isNotEmpty) {
       // We write the entry here. Notice how we don't have to call setState()
       // or anything - moor will take care of updating the list automatically.
-      bloc.addEntry(TodoEntry(content: controller.text));
+      int id = DateTime.now().millisecondsSinceEpoch;
+      bloc.addCategory(Category(id: id, description: "some category"));
+      bloc.addEntry(TodoEntry(category: id, content: controller.text));
       controller.clear();
     }
   }

--- moor_flutter/example/lib/widgets/todo_card.dart
+++ moor_flutter/example/lib/widgets/todo_card.dart
@@ -45,6 +45,12 @@
                 children: [
                   Text(entry.content),
                   dueDate,
+                  StreamBuilder<Category>(
+                    stream: BlocProvider.provideBloc(context).getCategory(entry.category),
+                    builder: (_, snap) {
+                      return Text(snap.data?.description ?? "");
+                    },
+                  ),
                 ],
               ),
             ),

Foreign keys not working

I can't make it work any way. I tried both overriding from the "Table" class and calling it on the property.

Overriding:

class Requests extends Table {
  IntColumn get requestId => integer()();
  IntColumn get requestTypeId => integer()();
  IntColumn get numberOfDocuments => integer()();

  @override
  Set<Column> get primaryKey => {requestId};
}

class RequestDocuments extends Table {
  IntColumn get requestId =>
      integer()();
  IntColumn get documentId => integer()();
  IntColumn get documentStateId => integer()();

  @override
  Set<Column> get primaryKey => {requestId, documentId};

  @override
  List<String> get customConstraints => [
        'FOREIGN KEY(request_id) REFERENCES requests(request_id)',
      ];
}

On the property:

class Requests extends Table {
  IntColumn get requestId => integer()();
  IntColumn get requestTypeId => integer()();
  IntColumn get numberOfDocuments => integer()();

  @override
  Set<Column> get primaryKey => {requestId};
}

class RequestDocuments extends Table {
  IntColumn get requestId =>
      integer().customConstraint('REFERENCES requests(request_id)')();
  IntColumn get documentId => integer()();
  IntColumn get documentStateId => integer()();

  @override
  Set<Column> get primaryKey => {requestId, documentId};
}

What I am doing wrong?

Originally posted by @JPiris88 in #14 (comment)

Table joins

Subtasks:

• table aliases
• join parameter on QueryEngine.select probably
• updated signature of the closure in the where method
  • probably the best way to keep type safety is to write Join2 ... Join10 classes manually?
• figuring out a good data structure for return values

Missing assert for when no primary key is defined during insert

A table defined like below, will throw an sql error when it attempts to add an item with a empty primary key, however when deleting an item, it will correctly assert that the table is missing a primary key

class MyTable extends Table {
  IntColumn get id => integer()();
}

//throws assert error correctly
delete(myTable).delete(item);

//does not throw assert error correctly
into(myTable).insert(item);

Error thrown:

DB Error: 1 "near ")": syntax error"
DB Query: CREATE TABLE IF NOT EXISTS my_table (id INTEGER NOT NULL, PRIMARY KEY ());

Bulk inserts

Implement a purely sql-based api

This library already generates a dart dsl to execute most queries and it also features custom queries. It would be nice to look at sql statements at compile time, figure out what variables appear in them, and then generate appropriate dart methods automatically.

The api could look like this:

@UseMoor(tables: [], queries: {Sql('SELECT * FROM users WHERE name = :name', name: 'usersByName')})
class MyDatabase extends _$MyDatabase {}

In that case, _$MyDatabase should have generated a method like:

Future<List<User>> usersByName(String name) {
  return //...
}
Stream<List<User>> watchUsersByName(String name) {
  return // ...
}

Current progress

All of these features should make it into the next version of moor, 1.5.

• Prototype implementation without sql functions
• Support common sqlite functions, with type resolution
• Support the BETWEEN and CASE expressions in sql.
• Support the LIKE operator
• Support EXISTS and (NOT) IN expressions - skipping NOT IN for now.
• Better error handling, don't crash the builder on invalid sql
• Documentation
• Potential api revamps, ability to use custom queries in transactions and migrations

For now, parsing update, delete and inserts statements is out of scope, they will not be available in the next 1.5 release. Edit: Update and delete statements turned out to be quite simple, they definitely will be implemented in 1.5.

How to tell which attribute is the primary key?

Warn when a table is included multiple times

It's possible to express the following query in moor

select(table).join([innerJoin(table, /* ... */)])

However, it won't generate valid sql as all the columns are included multiple times. We should warn about a possible typo and suggest to create an alias to fix this.

sqlparser bug: Cannot resolve ColumnBuilder with .named() column

In the moor_flutter/example project, adding the query SELECT id FROM categories WHERE desc = ? fails to parse:

Error while trying to parse SELECT id FROM categories WHERE desc = ?: line 1, column 38: Error: Could not parse this expression}

1 │ SELECT id FROM categories WHERE desc = ?
  │                                      ^

Removing .named('desc') from the table declaration and updating the query to SELECT id FROM categories WHERE description = ? is a workaround.

Is there any method like `insertOrUpdate`?

I want a method to insert a row but if there is a conflict then update it instead of inserting it.

Upgrade dependencies

The build_runner deps are outdated

Improve documentation for default values

Using a Constant is what users will be doing most of the time, and it appears that the current documentation is not doing a good job at pointing that out. There should at least be an example for this.

Unable to insert into new table. (Unhandled Exception: InvalidDataException)

I used exactly the demo code example described in "Getting Started" (https://moor.simonbinder.eu/getting-started/) and then "inserting" here:

https://moor.simonbinder.eu/queries/

Future<int> addTodoEntry(Todo entry) {
  return into(todos).insert(entry);
}

myDatabaseObject.addTodoEntry(
  Todo(
    title: 'Important task',
    content: 'Refactor persistence code',
  ),
);

And then I get the following error:

[VERBOSE-2:ui_dart_state.cc(148)] Unhandled Exception: InvalidDataException: Invalid data: Todo(id: null, title: Important task, content: Refactor persistence code, category: null) cannot be written into todos
#0 InsertStatement._validateIntegrity
package:moor/…/statements/insert.dart:120
#1 InsertStatement.insert
package:moor/…/statements/insert.dart:30

#2 MyDatabase.addTodoEntry
package:hn_app/favorites.dart:58
#3 _Item.build..
package:hn_app/main.dart:199
#4 _InkResponseState._handleTap
package:flutter/…/material/ink_well.dart:511
#5 _InkResponseState.build.
package:flutter/…/material/ink_well.dart:566
#6 GestureRecognizer.invokeCallback
package:flutter/…/gestures/recognizer.dart:166
#7 TapGestureRecognizer._checkUp
package:flutter/…/gestures/tap.dart:240
#8 TapGestureRecognizer.acceptGesture (package:flutte<…>

This is with Moor v 1.4.0.

sqlparser bug: Incorrect readsFrom when column with same name exists in other table

In the moor_flutter/example project both the categories and todos tables have a column named id, so adding the query SELECT * FROM categories WHERE id = :id generates:

Stream<List<Category>> watchEx1(int id) {
    return customSelectStream('SELECT * FROM categories WHERE id = :id',
        variables: [
          Variable.withInt(id),
        ],
        readsFrom: {
          categories,
          todos
        }).map((rows) => rows.map(_rowToCategory).toList());
  }

Updating the column to a unique name like category_id will correctly generate readsFrom: {categories}

Is there any way I can make a Stream for just one record?

How to use an embedded sqlite DB ?

How to use an existing database that already contains data?

Web support planned?

We are currently developing an app that uses Flutter for mobile and AngularDart for Web.
It would be cool if we could have an abstraction for creating queries and also an abstraction for the underlying framework such as SQLite or AlaSQL.
Are there already any plans?
How much effort would this be?

non-nullable attributes should be marked as @required in generated classes

How to work with foreign keys?

How to indicate a foreign key in a Table object?

Cache streams for queries

When a query has the same sql and variables, we can assume that it will always yield the same data and should consider them to be equal. Thus, when two equal queries construct a stream, we should only create one stream for both queries.
This will also make moor work more efficient in combination with something like

StreamBuilder(
  stream: db.select(users).watch(),
  builder: //...
)

As each invocation of watch would no longer return a different stream.

Error while inserting into database (with a real type)

E/flutter (13486): [ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: Bad state: Too many elements
E/flutter (13486): #0      _ListBase&Object&ListMixin.singleWhere (dart:collection/list.dart:167:11)
E/flutter (13486): #1      SqlTypeSystem.forDartType (package:moor/src/types/type_system.dart:23:18)
E/flutter (13486): #2      Variable.mapToSimpleValue (package:moor/src/runtime/expressions/variables.dart:48:37)
E/flutter (13486): #3      Variable.writeInto (package:moor/src/runtime/expressions/variables.dart:56:33)
E/flutter (13486): #4      InsertStatement._createContext (package:moor/src/runtime/statements/insert.dart:107:16)
E/flutter (13486): #5      InsertStatement.insert (package:moor/src/runtime/statements/insert.dart:31:17)

RealColumn - toDouble convert error on Select

If I create a column with type RealColumn and set it as nullable (), the insertion happens normally, but at the time of the select it generates an error saying that it is not possible to convert a null value to double. How can I solve this? I really need this column to be nullable.

RealColumn get sorStartTravelLon => real().named("sorStartTravelLon").nullable()();

E/flutter (10165): [ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: NoSuchMethodError: The method 'toDouble' was called on null. E/flutter (10165): Receiver: null E/flutter (10165): Tried calling: toDouble()

Provide descriptive error messages when data is invalid

At the moment we just throw a rather unhelpful InvalidDataException without any details on what exactly went wrong.

Implement a `fromJson` factory in generated data classes

Calling join on a select statement resets where and order-by clauses

Good afternoon, how are you?

I am trying to make a query with Join, however it is not only filtering the files I want:
`final placeLoading = alias(places, 'placeLoading');
final cityLoading = alias(locationCities, 'cityLoading');

final placeDischarge = alias(places, 'placeDischarge');
final cityDischarge = alias(locationCities, 'cityDischarge');

final query = await (select(serviceOrders)
  ..where((s) => s.sorCode.equals(sorCode)))
    .join([
  leftOuterJoin(serviceOrdersStatus,
      serviceOrdersStatus.sstStatus.equalsExp(serviceOrders.sorStatus)),
  leftOuterJoin(placeLoading,
      placeLoading.plaCode.equalsExp(serviceOrders.plaCodeLoading)),
  leftOuterJoin(
      cityLoading, cityLoading.citCode.equalsExp(placeLoading.citCode)),
  leftOuterJoin(placeDischarge,
      placeDischarge.plaCode.equalsExp(serviceOrders.plaCodeDischarge)),
  leftOuterJoin(cityDischarge,
      cityDischarge.citCode.equalsExp(placeDischarge.citCode)),
]).get();

List<ServiceOrderWithDetails> finalList = query.map((resultRow) {
  return ServiceOrderWithDetails(
    resultRow.readTable(serviceOrders),
    resultRow.readTable(serviceOrdersStatus),
    resultRow.readTable(placeLoading),
    resultRow.readTable(cityLoading),
    resultRow.readTable(placeDischarge),
    resultRow.readTable(cityDischarge),
  );
}).toList();`

This returns me 3 results and should only return 1. So if I test without the Join:
final query = await (select(serviceOrders) ..where((s) => s.sorCode.equals(sorCode))).get();

It returns me exactly the only result.

Am I doing something wrong?

Taking advantage of the topic, what is the best way for me to get a single record in the table? When for example I want to get the record for the primary key that does not repeat.

Default values for columns

More efficient hashCode algorithm

We should also use jenkins hash instead of that inner_hash * 31 + outer_hash thing

Column class clashes with Flutter

The name 'Column' is defined in the libraries 'package:flutter/src/widgets/basic.dart' and 'package:moor/src/dsl/columns.dart'.dart(ambiguous_import)

Error: The argument type 'XXX' can't be assigned to the parameter type 'Insertable<XXX>'.

This error occurs in a simple insert statement. Was working fine until yesterday.

PS: There is again a breaking change without increment major version.

sqlparser feature request: Generate List<T> instead of T for WHERE IN ? parameter

First of all thanks for your great work on the sqlparser library! I really think generating code from SQL is the best approach to ORMs/persistence libraries, and I'm so glad there's now a solution available for Dart users.

I have a feature request: When a bind argument exists inside an IN clause, the parameter in the generated code should have the type List<T> instead of T. For example, the query

SELECT * FROM todos WHERE id IN ?

would generate:

Future<List<TodoEntry>> todos(List<int> var1)
Stream<List<TodoEntry>> watchTodos(List<int> var1)

instead of:

Future<List<TodoEntry>> todos(int var1)
Stream<List<TodoEntry>> watchTodos(int var1)

Open the database before starting a transaction