Add carrier_id in sale.report

delivery_usability/__init__.py

@@ -1,3 +1,4 @@
 # -*- coding: utf-8 -*-
 
 from . import stock
+from . import sale_report

delivery_usability/sale_report.py

@@ -0,0 +1,23 @@
+# -*- coding: utf-8 -*-
+# Copyright 2021 Akretion France (http://www.akretion.com)
+# @author Alexis de Lattre <alexis.delattre@akretion.com>
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class SaleReport(models.Model):
+    _inherit = 'sale.report'
+
+    carrier_id = fields.Many2one(
+        "delivery.carrier", string="Delivery Method", readonly=True)
+
+    def _select(self):
+        select_str = super(SaleReport, self)._select()
+        select_str += ", s.carrier_id as carrier_id"
+        return select_str
+
+    def _group_by(self):
+        groupby_str = super(SaleReport, self)._group_by()
+        groupby_str += ", s.carrier_id"
+        return groupby_str