From 80a97b275f2b77c7e874994769795add01b4e761 Mon Sep 17 00:00:00 2001
From: gonzalo <gonzalo@ebizmarts.com>
Date: Thu, 19 May 2022 16:40:54 -0300
Subject: [PATCH] select only necessary fields for carts  #1391 for magento 2.3

---
 Model/Api/Cart.php | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Model/Api/Cart.php b/Model/Api/Cart.php
index 6e931774..41aa364a 100644
--- a/Model/Api/Cart.php
+++ b/Model/Api/Cart.php
@@ -146,6 +146,8 @@ protected function _getConvertedQuotes($mailchimpStoreId, $magentoStoreId)
         // get only the converted quotes
         $convertedCarts->addFieldToFilter('store_id', ['eq' => $magentoStoreId]);
         $convertedCarts->addFieldToFilter('is_active', ['eq' => 0]);
+        $convertedCarts->getSelect()->reset(\Zend_Db_Select::COLUMNS)->columns(['entity_id']);
+
         //join with mailchimp_ecommerce_sync_data table to filter by sync data.
         $convertedCarts->getSelect()->joinLeft(
             ['m4m' => $this->_helper->getTableName('mailchimp_sync_ecommerce')],
@@ -223,6 +225,8 @@ protected function _getModifiedQuotes($mailchimpStoreId, $magentoStoreId)
         $modifiedCarts->addFieldToFilter('is_active', ['eq'=>1]);
         // select carts for the current Magento store id
         $modifiedCarts->addFieldToFilter('store_id', ['eq' => $magentoStoreId]);
+        $modifiedCarts->getSelect()->reset(\Zend_Db_Select::COLUMNS)->columns(['entity_id']);
+
         //join with mailchimp_ecommerce_sync_data table to filter by sync data.
         $modifiedCarts->getSelect()->joinLeft(
             ['m4m' => $this->_helper->getTableName('mailchimp_sync_ecommerce')],
@@ -237,7 +241,6 @@ protected function _getModifiedQuotes($mailchimpStoreId, $magentoStoreId)
         );
         // limit the collection
         $modifiedCarts->getSelect()->limit(self::BATCH_LIMIT);
-
         /**
          * @var $cart \Magento\Quote\Model\Quote
          */
@@ -356,6 +359,8 @@ protected function _getNewQuotes($mailchimpStoreId, $magentoStoreId)
         if ($this->_firstDate) {
             $newCarts->addFieldToFilter('created_at', ['gt' => $this->_firstDate]);
         }
+        $newCarts->getSelect()->reset(\Zend_Db_Select::COLUMNS)->columns(['entity_id']);
+
         //join with mailchimp_ecommerce_sync_data table to filter by sync data.
         $newCarts->getSelect()->joinLeft(
             ['m4m' => $this->_helper->getTableName('mailchimp_sync_ecommerce')],
@@ -365,7 +370,6 @@ protected function _getNewQuotes($mailchimpStoreId, $magentoStoreId)
         );
         // be sure that the quotes are already in mailchimp and not deleted
         $newCarts->getSelect()->where("m4m.mailchimp_sync_delta IS NULL");
-
         // limit the collection
         $newCarts->getSelect()->limit(self::BATCH_LIMIT);
         /**