SET FOREIGN_KEY_CHECKS=0; TRUNCATE `sales_flat_creditmemo`; TRUNCATE `sales_flat_creditmemo_comment`; TRUNCATE `sales_flat_creditmemo_grid`; TRUNCATE `sales_flat_creditmemo_item`; TRUNCATE `sales_flat_invoice`; TRUNCATE `sales_flat_invoice_comment`; TRUNCATE `sales_flat_invoice_grid`; TRUNCATE `sales_flat_invoice_item`; TRUNCATE `sales_flat_order`; TRUNCATE `sales_flat_order_address`; TRUNCATE `sales_flat_order_grid`; TRUNCATE `sales_flat_order_item`; TRUNCATE `sales_flat_order_payment`; TRUNCATE `sales_flat_order_status_history`; TRUNCATE `sales_flat_quote`; TRUNCATE `sales_flat_quote_address`; TRUNCATE `sales_flat_quote_address_item`; TRUNCATE `sales_flat_quote_item`; TRUNCATE `sales_flat_quote_item_option`;...