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dart_mssql

High Performance Microsoft SQL Server (MS-SQL Server) Driver for Dart (32 & 64bits)

Important

  • This package is not suitable for flutter or web projects. It only runs on server-side apps.
  • It works only on Windows (32bits or 64bits)
  • You have to install OLE DB Driver
  • You have to install Microsoft Visual C++ Redistributable
  • dart_mssql_32.dll (32-bit) and dart_mssql_64.dll (64-bit) are the compiled versions of the driver. Rename to "dart_mssql.dll" according to your needs and copy it to the main directory of your project.

Example Usage

Demo code to perform Raw SQL queries

import 'dart:io';
import 'package:dart_mssql/dart_mssql.dart';

void main() async {
  SqlConnection connection = SqlConnection(host:"SERVERNAME", db:"DBNAME", user:"USERNAME", password:"PASSWORD");
  String cmd = "select email from usuario where id_usuario=?";
  
  SqlResult result = connection.execute(cmd,[4]);
  result.rows.forEach((e) {
    print("${e.email}");
  });
  print("end of printing.");
  connection.close();
  stdin.readLineSync();
}

Troubleshooting

Problem:
The specified module could not be found.
error: library handler failed

Cause:
Missing installing Microsoft OLE DB Driver OR missing dart_mssql.dll file into project main directory OR missing Microsoft Visual C++ Redistributable

Solution:
Copy dart_mssql.dll file into project main directory.


Problem:
%1 is not a valid Win32 application.
error: library handler failed

Cause:
incorrect dart_mssql.dll version (32 bits with dart VM 64 bits or vice versa)

Solution:
Copy correct dart_mssql.dll file into project main directory.

Compiling with Microsoft Visual Studio 2017 Community Edition

IF AND ONLY IF you want to compile library source code (C++ part) follow the instructions below:

  • Before compile, you have to install Windows 10 SDK on your Microsoft Visual Studio 2017 Community Edition
  • Open solution file dart_mssql\cpp\dart_mssql.sln with Microsoft Visual Studio 2017 Community Edition
  • On "Solution Explorer" Panel right click on dart_mssql project and select "Rebuild"
  • Put the generated dart_mssql.dll file into your project main folder (same folder of your pubspec.yaml file)
  • Be sure to have correct dart-sdk\bin folder (32 or 64 bits) in VC++ Directories -> Library Directories. Change "F:\DartSDK64\dart-sdk\bin" to your location
  • Be sure to have correct dart.lib version (32 or 64 bits) in Linker -> Input -> Additional Dependencies. Change "F:\DartSDK64\dart-sdk\bin\dart.lib" to your location