winsql - WinSQL 使用 Case/When 语句

Question

嗨，我是该网站的新手，对 SQL（WinSQL）相当陌生。我正在尝试使用 case/when 来获取一些数据，但我遇到了语法错误。

select  emp_id,
     a.itm_num, 
     a.cont_num,
     a.wrk_asgn
     
     
     (case when c.case_qty > 0 then a.qty_actual/c.case_qty else 0 end as cartons_cp,
     (case_len * case_wid * case_hgt) as cube_vol, 
     substr(dt_tm_start,12,2) as hr, 
     vehicle_class,
     vehicle_type)
    
    from 'catalyst'.trhpick a 
          inner Join 'catalyst'.item b 
                on a.itm_num = b.itm_num 
          inner Join 'catalyst'.itemconfig c 
                on b.itm_num = c.itm_num and b.def_config_seq = c.itm_conf_seq
    
    
    where wrk_fnc_code = 110 and  a.dt_tm_end between '2017-07-01 00:00:00' and '2017-08-24 23:59:59' and a.cont_num <> 0 
    
    group by 1,2
    
    order by emp_id,vehicle_class