if  not exists (select * from t_sys_system where sys_var_id = 'pos_default_payall')
begin
	insert into t_sys_system (sys_var_id, sys_var_name, sys_var_value,branch_no)
	values('pos_default_payall','前台结算支持默认付全款','1','000');
end
else
  update t_sys_system set  sys_var_value ='1'  where sys_var_id = 'pos_default_payall'
GO