remove the primary key from the allowedClients

init.php

@@ -19,7 +19,7 @@ function initDatabase() {
 			clientData TEXT NOT NULL
 		    )',
 		    'CREATE TABLE IF NOT EXISTS allowedClients (
-			userId VARCHAR(255) NOT NULL PRIMARY KEY,
+			userId VARCHAR(255) NOT NULL,
 			clientId VARCHAR(255) NOT NULL
 		    )',
 		    'CREATE TABLE IF NOT EXISTS userStorage (

upgrade/0.4.1/upgrade.php

@@ -0,0 +1,28 @@
+<?php
+        require_once(__DIR__ . "/../../config.php");
+        require_once(__DIR__ . "/../../vendor/autoload.php");
+
+        use Pdsinterop\PhpSolid\Server;
+
+        function upgradeDatabase() {
+                $statements = [
+                        'BEGIN TRANSACTION',
+                        'CREATE TABLE allowedClients_new (userId VARCHAR(255) NOT NULL, clientId VARCHAR(255) NOT NULL)',
+                        'INSERT INTO allowedClients_new (userId, clientId) SELECT userId, clientId FROM allowedClients',
+                        'DROP TABLE allowedClients',
+                        'ALTER TABLE allowedClients_new RENAME TO allowedClients',
+                        'COMMIT'
+                ];
+
+                try {
+                    $pdo = new \PDO("sqlite:" . DBPATH);
+
+                    // create tables
+                    foreach($statements as $statement){
+                        $pdo->exec($statement);
+                    }
+                } catch(\PDOException $e) {
+                    echo $e->getMessage();
+                }
+        }
+        upgradeDatabase();