fixes #8824 remove NO_ENGINE_SUBSTITUTION mode to prevent error if innodb is not available

core/Db.php

@@ -33,7 +33,7 @@ use Piwik\Db\Adapter;
  */
 class Db
 {
-    const SQL_MODE = 'STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_AUTO_VALUE_ON_ZERO,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE';
+    const SQL_MODE = 'STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_AUTO_VALUE_ON_ZERO,NO_ZERO_DATE,NO_ZERO_IN_DATE';
 
     private static $connection = null;
 

tests/PHPUnit/Integration/DbTest.php

@@ -52,7 +52,7 @@ class DbTest extends IntegrationTestCase
         $this->assertInstanceOf($expectedClass, $db);
         $result = $db->fetchOne('SELECT @@SESSION.sql_mode');
 
-        $expected = 'NO_AUTO_VALUE_ON_ZERO,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';
+        $expected = 'NO_AUTO_VALUE_ON_ZERO,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER';
         $this->assertSame($expected, $result);
     }