fecshop order 表头注释调整

migrations/mysqldb/m170724_031142_fecshop_tables.php

+<?php
+
+use yii\db\Migration;
+
+class m170724_031142_fecshop_tables extends Migration
+{
+    public function safeUp()
+    {
+        $arr = [
+            "
+            ALTER TABLE `sales_flat_order` CHANGE `txn_id` `txn_id` VARCHAR( 30 ) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT 'Transaction Id 支付平台唯一交易号,通过这个可以在第三方支付平台查找订单',
+            CHANGE `payer_id` `payer_id` VARCHAR( 30 ) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '它是特定PayPal帐户的外部唯一标识符';
+            "
+            ,
+            "
+            ALTER TABLE `sales_flat_order` CHANGE `txn_type` `txn_type` VARCHAR( 20 ) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT 'Transaction类型，是在购物车点击支付按钮下单，还是在下单页面填写完货运地址信息下单';
+            "
+            ,
+        ];
+    
+        foreach ($arr as $sql) {
+            $this->execute($sql);
+        }
+    }
+
+    public function safeDown()
+    {
+        echo "m170724_031142_fecshop_tables cannot be reverted.\n";
+
+        return false;
+    }
+
+    /*
+    // Use up()/down() to run migration code without a transaction.
+    public function up()
+    {
+
+    }
+
+    public function down()
+    {
+        echo "m170724_031142_fecshop_tables cannot be reverted.\n";
+
+        return false;
+    }
+    */
+}