Sql 使用计数函数，但select语句中有多个字段以查看更多数据

我得到的错误是

'第2行错误ORA-00923:FROM关键字未在预期位置找到'

当我运行下面的查询时，我得到设备和它在第二个表（wo_work_order）中使用的次数，但我也需要第一个表（eq_位置）中的描述和标记的_as_deleted字段

---

除了在计数（工单设备）之前添加缺少的逗号

，

，，您还需要添加

eq\u位置。说明
和
eq\u位置。在分组by子句中标记为已删除

select eq_locations.equipment, count(wo_work_order.equipment) from eq_locations
left outer join wo_work_order
on eq_locations.equipment = wo_work_order.equipment
where eq_locations.plant='908'
group by eq_locations.equipment
order by eq_locations.equipment

对联接使用
JOIN ON
语法。不要使用
a，b
语法。此外，更喜欢使用简单的表别名，而不是到处使用整个表名。我想您需要使用
LEFT JOIN
进行第二次查询，以获得
工单
表中缺失设备的0计数。这个查询应该可以正常工作

select 
    eq_locations.equipment,eq_locations.description, 
    eq_locations.marked_as_deleted, count(wo_work_order.equipment)
 FROM  
    eq_locations, wo_work_order 
where 
    eq_locations.equipment=wo_work_order.equipment and 
    eq_locations.plant='908' and eq_locations.marked_as_deleted = '0'
group by 
    eq_locations.equipment, eq_locations.description, eq_locations.marked_as_deleted
order by 
    eq_locations.equipment

缺少
，
在
标记为已删除计数（wo
）之间？
select 
    eq_locations.equipment,eq_locations.description, 
    eq_locations.marked_as_deleted, count(wo_work_order.equipment)
 FROM  
    eq_locations, wo_work_order 
where 
    eq_locations.equipment=wo_work_order.equipment and 
    eq_locations.plant='908' and eq_locations.marked_as_deleted = '0'
group by 
    eq_locations.equipment, eq_locations.description, eq_locations.marked_as_deleted
order by 
    eq_locations.equipment

 SELECT  e.equipment,
         e.description,
         e.marked_as_deleted,
         COUNT(w.equipment)
FROM     eq_locations e LEFT OUTER JOIN wo_work_order w
ON e.equipment=w.equipment
AND      e.plant='908'
AND      e.marked_as_deleted = '0'
GROUP BY e.equipment,
         e.description,
         e.marked_as_deleted
ORDER BY e.equipment;