Track corrected result points

administrator/components/com_testquestions/sql/install.mysql.utf8mb4.sql

@@ -84,6 +84,8 @@ CREATE TABLE IF NOT EXISTS `#__testquestions_results` (
   `correct_count` smallint unsigned NOT NULL DEFAULT 0,
   `total_count` smallint unsigned NOT NULL DEFAULT 0,
   `percentage` decimal(5,2) NOT NULL DEFAULT 0.00,
+  `points_before` int unsigned NOT NULL DEFAULT 0,
+  `points_after` int unsigned NOT NULL DEFAULT 0,
   `answers` longtext NULL,
   `created` datetime NOT NULL,
   `created_by` int unsigned NOT NULL DEFAULT 0,

administrator/components/com_testquestions/sql/updates/mysql/1.21.0.sql

@@ -0,0 +1,8 @@
+ALTER TABLE `#__testquestions_results`
+  ADD COLUMN `points_before` int unsigned NOT NULL DEFAULT 0 AFTER `percentage`,
+  ADD COLUMN `points_after` int unsigned NOT NULL DEFAULT 0 AFTER `points_before`;
+
+UPDATE `#__testquestions_results`
+SET `points_before` = `correct_count`,
+    `points_after` = `correct_count`
+WHERE `points_before` = 0 AND `points_after` = 0;