Importing orders from a CSV into Magento programmatically

Surprised no answers with so many votes/views, so I'll bite:

1. This would be dependant on the old POS system, massage the data during import.
2. Familiarize yourself with Varien_Io, particularly Varien_Io_File. Since you'll most likely be dealing with such a large collection of data, keep in mind to use streams such as StreamReadCsv and StreamWriteCsv. More details on a "stream". Without a stream or linear read/write you may run into memory issues with other load/write methods.

With the above said here is an example: (source Atwix.com)

/**
 * Generates CSV file with product's list according to the collection in the $this->_list
 * @return array
 */
public function generateMlnList()
{
    if (!is_null($this->_list)) {
        $items = $this->_list->getItems();
        if (count($items) > 0) {

            $io = new Varien_Io_File();
            $path = Mage::getBaseDir('var') . DS . 'export' . DS;
            $name = md5(microtime());
            $file = $path . DS . $name . '.csv';
            $io->setAllowCreateFolders(true);
            $io->open(array('path' => $path));
            $io->streamOpen($file, 'w+');
            $io->streamLock(true);

            $io->streamWriteCsv($this->_getCsvHeaders($items));
            foreach ($items as $product) {
                $io->streamWriteCsv($product->getData());
            }

            return array(
                'type'  => 'filename',
                'value' => $file,
                'rm'    => true // can delete file after use
            );
        }
    }
}

As for importing orders, this example has helped most: (Source: pastebin)

<?php

require_once 'app/Mage.php';

Mage::app();

$quote = Mage::getModel('sales/quote')
    ->setStoreId(Mage::app()->getStore('default')->getId());

if ('do customer orders') {
    // for customer orders:
    $customer = Mage::getModel('customer/customer')
        ->setWebsiteId(1)
        ->loadByEmail('[email protected]');
    $quote->assignCustomer($customer);
} else {
    // for guesr orders only:
    $quote->setCustomerEmail('[email protected]');
}

// add product(s)
$product = Mage::getModel('catalog/product')->load(8);
$buyInfo = array(
    'qty' => 1,
    // custom option id => value id
    // or
    // configurable attribute id => value id
);
$quote->addProduct($product, new Varien_Object($buyInfo));

$addressData = array(
    'firstname' => 'Test',
    'lastname' => 'Test',
    'street' => 'Sample Street 10',
    'city' => 'Somewhere',
    'postcode' => '123456',
    'telephone' => '123456',
    'country_id' => 'US',
    'region_id' => 12, // id from directory_country_region table
);

$billingAddress = $quote->getBillingAddress()->addData($addressData);
$shippingAddress = $quote->getShippingAddress()->addData($addressData);

$shippingAddress->setCollectShippingRates(true)->collectShippingRates()
        ->setShippingMethod('flatrate_flatrate')
        ->setPaymentMethod('checkmo');

$quote->getPayment()->importData(array('method' => 'checkmo'));

$quote->collectTotals()->save();

$service = Mage::getModel('sales/service_quote', $quote);
$service->submitAll();
$order = $service->getOrder();

printf("Created order %s\n", $order->getIncrementId());

With the example you have now will be resource heavy, as there are Mage::getModel(... calls in foreach loops which is bad practice, and will most likely either timeout, or fill up memory rather quickly. Especially if you have this wrapped in another foreach/while.

This...

foreach ($products as $productId=>$product) {
  $_product = Mage::getModel('catalog/product')->load($productId);

Should look like:

$_product = Mage::getModel('catalog/product');
foreach ($products as $productId=>$product) {
  $_product->load($productId);

I would not attempt to try and relate every CSV bits of data to Magento objects. It would be madness and a bit of overkill, keep with resource model entry points of $model->load(EntityId).

Also note if you are attempting to import over 100k+ orders I would be concerned for performance after the large imports as its necessary to keep MySQL tuned to handle such large volumes, not too mention if I'm not mistaken sales objects are still EAV based, and do not perform well under high volume/traffic. There is a reason Magento Enterprise has a Sales Order Archive module to pull old data out of the "transactional" sales order tables to prevent bloated/stale data that isn't needed for taking orders.

To Wrap: I would bring up the requirements and needs of the business to store such large data, if its purely reporting there are better alternatives to suite this than Magento.

Thinking about the impact these historic orders would have on the magento/mysql performance plus the fact that any product lines that have been discontinued would need to be imported too then it might be worth considering storing the historic orders along with the customer and products in something like an elasticsearch index and perform a search on demand. i.e. the customer order history page.

From creating quote and then creating an order is taking too much time for huge data of order import.

So, I've researched and found the conclusion of huge order import data with mysql query:

1. I inserted the data into only order tables.

2. Update the increment_id to recognize magento 1.x, that last order increment_id is this

3. This query is not creating any quote, invoice and shipment:

   SQL Queries:-

   1. INSERT INTO `sales_flat_order` (state, status, shipping_description, store_id, customer_id, base_discount_invoiced, base_grand_total, base_shipping_amount, base_shipping_invoiced, base_subtotal, base_subtotal_invoiced, base_tax_amount, base_tax_invoiced, base_total_invoiced, base_total_invoiced_cost, base_total_paid, discount_invoiced, grand_total, shipping_amount, shipping_invoiced, subtotal, subtotal_invoiced, tax_amount, tax_invoiced, total_invoiced, total_paid, customer_group_id, increment_id, base_currency_code, global_currency_code, customer_email, customer_firstname, customer_lastname, customer_middlename, order_currency_code, shipping_method, store_currency_code, store_name, created_at, updated_at, total_item_count, hidden_tax_invoiced, base_hidden_tax_invoiced, is_valid) VALUES ("complete", "complete", "Flat Rate - Fixed", 1, 38322,0,225.7,0,0,214.95,214.95,10.75,10.75,225.7, 0,225.7, 0,225.7,0,0,214.95,214.95,10.75,10.75,225.7,225.7, 1,100026111,"CAD","CAD","[email protected]","abc","abc","", "CAD", "flatrate_flatrate", "CAD", "Main Website\nMain Website Store\nOnline Catalog","2012-01-17 00:00:00","2012-01-17 00:00:00",5,0,0,0);

   2. INSERT INTO `sales_flat_order_grid` (entity_id, status, shipping_description, shipping_method, store_id, customer_id, customer_email, total_qty_ordered, base_grand_total, base_total_paid, grand_total, total_paid, increment_id, base_currency_code, order_currency_code, store_name, created_at, updated_at, payment_validated, billing_name, shipping_name) VALUES (5, "complete", "Flat Rate - Fixed", "flatrate_flatrate", 1, 38322,"[email protected]",5,225.7,225.7,225.7,225.7,100026111,"CAD", "CAD", "Main Website\nMain Website Store\nOnline Catalog","2012-01-17 00:00:00","2012-01-17 00:00:00",1,"abc abc","abc abc");

   3. INSERT INTO `sales_flat_order_address` (parent_id, region_id, customer_id, email, region, postcode, lastname, street, city, telephone, country_id, firstname, address_type, middlename, nick_name) VALUES (5,68,38322,"[email protected]","Manitoba","R3W 1G9","abc","1607 Concordia Ave E","Winnipeg","204 667-5540","CA","abc","billing","","")

   4. INSERT INTO `sales_flat_order_address` (parent_id, region_id, customer_id, email, region, postcode, lastname, street, city, telephone, country_id, firstname, address_type, middlename, nick_name) VALUES (5,68,38322,"[email protected]","Manitoba","R3W 1G9","abc","1607 Concordia Ave E","Winnipeg","204 667-5540","CA","abc","shipping","","");

   5. INSERT INTO `sales_flat_order_item` (order_id, store_id, created_at, updated_at, product_id, product_type, sku, name, qty_ordered, price, base_price, original_price, base_original_price, row_total, base_row_total, price_incl_tax, base_price_incl_tax, row_total_incl_tax, base_row_total_incl_tax) VALUES (5,1,"2012-01-17 00:00:00","2012-01-17 00:00:00",4134,"simple","MET2240","ULTRA FLORA IB - 30 CAPS",4,44.99,44.99,44.99,44.99,179.96,179.96,44.99,44.99,179.96,179.96);

   6. INSERT INTO `sales_flat_order_item` (order_id, store_id, created_at, updated_at, product_id, product_type, sku, name, qty_ordered, price, base_price, original_price, base_original_price, row_total, base_row_total, price_incl_tax, base_price_incl_tax, row_total_incl_tax, base_row_total_incl_tax) VALUES (5,1,"2012-01-17 00:00:00","2012-01-17 00:00:00",3198,"simple","WS1600","THYROSENSE - 180 VCAPS + 60 VCAPS FREE",1,34.99,34.99,34.99,34.99,34.99,34.99,34.99,34.99,34.99,34.99);

   7. INSERT INTO `sales_flat_order_payment` (parent_id, base_shipping_amount, shipping_amount, base_amount_paid, amount_paid, base_amount_ordered, amount_ordered, method) VALUES (5,0,0,225.7,225.7,225.7,225.7, "cashondelivery");

   8. UPDATE `eav_entity_store` SET increment_last_id = 100026111 WHERE `entity_type_id` = 5 AND `store_id` = 1;