Properly add new columns to sales order grid in Magento 2 - magento

Question

I created a module to add 2 columns in sales grid, shipping_information and tracking number.
The columns appears but when I tried to filter by Order ID in admin order page, example with 973, I got this error
main.CRITICAL: Item (Magento\Framework\View\Element\UiComponent\DataProvider\Document\Interceptor) with the same ID "6245" already exists. {"exception":"[object] (Exception(code: 0): Item (Magento\\Framework\\View\\Element\\UiComponent\\DataProvider\\Document\\Interceptor) with the same ID \"6245\" already exists. at /home/xxxx/public_html/vendor/magento/framework/Data/Collection.php:404)"}
Also this error
Integrity constraint violation: 1052 Column 'created_at' in order clause is ambiguous
But when I tried with another ID, the error disappear
In Vendor/Module/Model/ResourceModel/Order/Grid/Collection.php
namespace Wetag\AdditionalOrderFields\Model\ResourceModel\Order\Grid;
use Magento\Framework\Data\Collection\Db\FetchStrategyInterface as FetchStrategy;
use Magento\Framework\Data\Collection\EntityFactoryInterface as EntityFactory;
use Magento\Framework\Event\ManagerInterface as EventManager;
use Magento\Sales\Model\ResourceModel\Order\Grid\Collection as OriginalCollection;
use Psr\Log\LoggerInterface as Logger;
/**
* Order grid extended collection
*/
class Collection extends OriginalCollection
{
protected $helper;
public function __construct(
EntityFactory $entityFactory,
Logger $logger,
FetchStrategy $fetchStrategy,
EventManager $eventManager,
$mainTable = 'sales_order_grid',
$resourceModel = \Magento\Sales\Model\ResourceModel\Order::class
)
{
parent::__construct($entityFactory, $logger, $fetchStrategy, $eventManager, $mainTable, $resourceModel);
}
protected function _renderFiltersBefore()
{
$joinTable = $this->getTable('sales_order');
$joinTable_track = $this->getTable('sales_shipment_track');
$this->getSelect()->joinLeft($joinTable, 'main_table.entity_id = sales_order.entity_id', ['shipping_information'])->distinct();
$this->getSelect()->joinLeft($joinTable_track, 'sales_order.entity_id = sales_shipment_track.order_id', ['track_number'])->distinct();
parent::_renderFiltersBefore();
}
protected function _initSelect() {
$this->addFilterToMap('increment_id', 'main_table.increment_id');
$this->addFilterToMap('status', 'main_table.status');
parent::_initSelect();
return $this;
}
}
In Vendor/Module/etc/di.xml
<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
<type name="Magento\Framework\View\Element\UiComponent\DataProvider\CollectionFactory">
<arguments>
<argument name="collections" xsi:type="array">
<item name="sales_order_grid_data_source" xsi:type="string">Vendor\Module\Model\ResourceModel\Order\Grid\Collection</item>
</argument>
</arguments>
</type>
<type name="Vendor\Module\Model\ResourceModel\Order\Grid\Collection">
<arguments>
<argument name="mainTable" xsi:type="string">sales_order_grid</argument>
<argument name="resourceModel" xsi:type="string">Magento\Sales\Model\ResourceModel\Order</argument>
</arguments>
</type>
</config>
In etc/module.xml
<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/Module/etc/module.xsd">
<module name="Vendor_Module" setup_version="1.0.0">
<sequence>
<module name="Magento_sales" />
</sequence>
</module>
</config>
In Vendor/Module/view/adminhtml/ui_component/sales_order_grid.xml
<?xml version="1.0" encoding="UTF-8"?>
<listing xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Ui:etc/ui_configuration.xsd">
<columns name="sales_order_columns">
<column name="shipping_information">
<argument name="data" xsi:type="array">
<item name="config" xsi:type="array">
<item name="filter" xsi:type="string">text</item>
<item name="label" xsi:type="string" translate="true">Shipping method</item>
</item>
</argument>
</column>
<column name="track_number">
<argument name="data" xsi:type="array">
<item name="config" xsi:type="array">
<item name="filter" xsi:type="string">text</item>
<item name="label" xsi:type="string" translate="true">Tracking number</item>
</item>
</argument>
</column>
</columns>
</listing>
I like to use the field shipping_information in order_sales_grid table, I didn’t get it without making a left join, I like to select this field without join

Answer 1

I solved the issue by grouping by entity_id ->group('main_table.entity_id') to remove duplicaded rows and delete LeftJoin to Sales_order table since shipping_information already exists in sales_order_grid table
protected function _renderFiltersBefore()
{
$joinTable_track = $this->getTable('sales_shipment_track');
$this->getSelect()->joinLeft($joinTable_track, 'main_table.entity_id = sales_shipment_track.order_id', ['track_number'])->group('main_table.entity_id');
parent::_renderFiltersBefore();
}