Question

我是SQL语言的初学者（既不是Oracle也不是Access），我正在尝试将此Oracle SQL转换为MS Access SQL代码，但它失败并出现以下错误：

SQL> select
  2  o.item,
  3  o.qty ord_qty,
  4  i.loc,
  5  i.purch,
  6  i.qty loc_qty,
  7  sum(i.qty) over (
  8     partition by i.item
  9     order by i.purch, i.loc
 10     rows between unbounded preceding and current row
 11  ) sum_qty
 12  from orderline o
 13  join inventory i
 14     on i.item = o.item
 15  where o.ordno = :pick_order
 16  order by
 17  o.item,
 18  i.purch,
 19  i.loc;

有什么想法吗？

Oracle SQL

SELECT o.item, o.qty AS ord_qty, i.Loc, i.purch, i.qty AS loc_qty, sum(i.qty) over (partition by i.item rows between unbounded preceding and current row) AS sum_qty
FROM orderline AS o INNER JOIN inventory AS i ON o.item = i.item
WHERE (((o.ordno)=1))
ORDER BY o.item, i.purch, i.Loc;

MS Access SQL

{{1}}

Answer 1

您可以使用相关子查询执行所需操作。我最好的猜测是：

SELECT o.item, o.qty AS ord_qty, i.Loc, i.purch, i.qty AS loc_qty, 
       (SELECT SUM(i2.qty)
        FROM orderline o2 INNER JOIN
             inventory as i2
             ON o2.item = i2.item
        WHERE o2.ordno = 0.orderno AND
              i2.item = i.item AND
              (i2.purch < i.purch or
               i2.purch = i.purch and i2.loc = i.loc
              )
       ) as sum_qty
FROM orderline AS o INNER JOIN
     inventory AS i 
     ON o.item = i.item
WHERE o.ordno = 1
ORDER BY o.item, i.purch, i.Loc;

Answer 2

正如其他一些人提到的，MS Access 不支持窗口函数

MS Access语法错误

2 个答案: