MAGETWO-35628: Refactor queries for Magento\Reports\Model\Resource\Customer\Collection - no found usages clients uses order report implementation

Author: valdislav

app/code/Magento/Reports/Model/Resource/Customer/Collection.php

@@ -152,90 +152,6 @@ public function addCustomerName()
         return $this;
     }
 
-    /**
-     * Order for each customer
-     *
-     * @param string $fromDate
-     * @param string $toDate
-     * @return $this
-     */
-    public function joinOrders($fromDate = '', $toDate = '')
-    {
-        if ($fromDate != '' && $toDate != '') {
-            $dateFilter = " AND orders.created_at BETWEEN '{$fromDate}' AND '{$toDate}'";
-        } else {
-            $dateFilter = '';
-        }
-
-        $this->getSelect()->joinLeft(
-            ['orders' => $this->getTable('sales_order')],
-            "orders.customer_id = e.entity_id" . $dateFilter,
-            []
-        );
-
-        return $this;
-    }
-
-    /**
-     * Add orders count
-     *
-     * @return $this
-     */
-    public function addOrdersCount()
-    {
-        $this->getSelect()->columns(
-            ["orders_count" => "COUNT(orders.entity_id)"]
-        )->where(
-            'orders.state <> ?',
-            \Magento\Sales\Model\Order::STATE_CANCELED
-        )->group(
-            "e.entity_id"
-        );
-
-        return $this;
-    }
-
-    /**
-     * Order summary info for each customer such as orders_count, orders_avg_amount, orders_total_amount
-     *
-     * @param int $storeId
-     * @return $this
-     */
-    public function addSumAvgTotals($storeId = 0)
-    {
-        $adapter = $this->getConnection();
-        $baseSubtotalRefunded = $adapter->getIfNullSql('orders.base_subtotal_refunded', 0);
-        $baseSubtotalCanceled = $adapter->getIfNullSql('orders.base_subtotal_canceled', 0);
-
-        /**
-         * calculate average and total amount
-         */
-        $expr = $storeId ==
-            0 ?
-            "(orders.base_subtotal - {$baseSubtotalCanceled} - {$baseSubtotalRefunded}) * orders.base_to_global_rate" :
-            "orders.base_subtotal - {$baseSubtotalCanceled} - {$baseSubtotalRefunded}";
-
-        $this->getSelect()->columns(
-            ["orders_avg_amount" => "AVG({$expr})"]
-        )->columns(
-            ["orders_sum_amount" => "SUM({$expr})"]
-        );
-
-        return $this;
-    }
-
-    /**
-     * Order by total amount
-     *
-     * @param string $dir
-     * @return $this
-     */
-    public function orderByTotalAmount($dir = self::SORT_ORDER_DESC)
-    {
-        $this->getSelect()->order("orders_sum_amount {$dir}");
-        return $this;
-    }
-
     /**
      * Add order statistics
      *