partner_history_sale/models/product_stock_picking.py

# -*- coding: utf-8 -*-
from openerp import tools, models, api
from openerp.osv import osv, fields

class product_order_line(osv.osv):

    _name = "product.order.line"
    _description = "product.order.line"
    _auto = False
    _columns = {
		'product_id': fields.many2one('product.product','product'),
        'product_qty': fields.float(string='Cantidad', readonly=True),
        'partner_id' : fields.many2one('res.partner',string='Partner'),
        }
    _order = 'id asc'

    def init(self, cr):
		tools.sql.drop_view_if_exists(cr, 'product_order_line')
		cr.execute("""
        CREATE OR REPLACE VIEW product_order_line as (
            SELECT row_number() over (ORDER BY so.partner_id)as id,
	               sol.product_id as product_id,
	               sum(sol.product_uom_qty) as product_qty,
	               so.partner_id as partner_id
            FROM sale_order_line sol
                inner join sale_order so on(so.id = sol.order_id)
            GROUP BY sol.product_id, so.partner_id)
		    """)