Example is here
please correct this code....
from odoo import api, fields, models, tools
class PosOrderReport(models.Model):
 _name = "report.pos.order"    
_description = "Point of Sale Orders Statistics"
_auto = False
_order = 'date desc'
date = fields.Datetime(string='Date Order', readonly=True)    
order_id = fields.Many2one('pos.order', string='Order', readonly=True)
@api.model_cr
def init(self):
 tools.drop_view_if_exists(self._cr, 'report_pos_order') 
self._cr.execute("""
CREATE OR REPLACE VIEW report_pos_order AS (
SELECT
s.date_order AS date,
s.id as order_id,
s.date_order || s.id as order with date    # this is not working please any solution 
FROM table s
