错误：不允许组功能

Question

select shipment_stop_d.shipment_gid,count(s_ship_unit_line.s_ship_unit_gid) 
from s_ship_unit_line,shipment_stop_d 
where shipment_stop_d.shipment_gid is not null 
and count(s_ship_unit_line.s_ship_unit_gid) > 200 
group by s_ship_unit_line.s_ship_unit_gid;

我需要的条件是在表s_ship_unit_line 中有多少个{(s_ship_unit_line.s_ship_unit_gid)} 的计数超过200 对于表shipment_gid 在表shipment_stop_d 中的shipment_gid

Answer 1

你在 where 子句中有count(s_ship_unit_line.s_ship_unit_gid) > 200，这是违反规则的。

count 是一个可以允许的组函数 在 select 列表或 have by 子句中。

使用

select d.shipment_gid,count(l.s_ship_unit_gid) 
  from s_ship_unit_line l join shipment_stop_d d 
    on ( d.id = l.shipment_id ) -- I assumed this columns for joining condition.
 where d.shipment_gid is not null 
 group by l.s_ship_unit_gid
having count(l.s_ship_unit_gid) > 200;

改为。