- A lot of fixes made again in this patch

src/Query/Alter.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace Ulmus\Query;
+
+use Ulmus\Annotation,
+    Ulmus\Common\EntityField;
+
+class Alter extends Fragment {
+
+    const SQL_TOKEN = "ALTER TABLE";
+
+    public string $table;
+
+    public string $engine;
+
+    public int $order = -80;
+
+    public bool $skipExisting = true;
+
+    public array  $fieldList;
+
+    public function render() : string
+    {
+        return $this->renderSegments([
+            static::SQL_TOKEN, $this->renderTables($this->table), $this->renderFields(),
+        ]);
+    }
+
+    public function renderFields() : string
+    {
+        return "(" . PHP_EOL . implode("," . PHP_EOL, array_map(function($field) {
+            return "    " . EntityField::generateAlterColumn($field);
+        }, $this->fieldList)) . PHP_EOL . ")";
+    }
+}