(goctl)fix: #3328 (#3348)

Co-authored-by: Kevin Wan <wanjunfeng@gmail.com>

tools/goctl/model/sql/parser/testdata/user.sql

@@ -7,6 +7,8 @@ CREATE TABLE `test_user`
   名',
     `create_time` timestamp NULL DEFAULT CURRENT_TIMESTAMP comment '创建\r时间',
     `update_time` timestamp NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    `delete_time` timestamp NULL DEFAULT NULL,
+    `delete_at` timestamp NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP,
     PRIMARY KEY (`id`),
     UNIQUE KEY `mobile_unique` (`mobile`),
     UNIQUE KEY `class_name_unique` (`class`,`name`),