当查询工作时，ASP.NET DataAdapter查询无效

Question

大概6个月前，我开始在我的ASP.net web应用中使用DataSet。它是一个漂亮的工具，让我可以快速开发MVC应用程序，而不必在数据库连接/查询中做所有繁琐的工作。

但是今天我遇到了一些奇怪的问题。它从这个查询开始：

select a.MR_PART_CODE as PART_CODE,

       b.PART_DESC as PART_DESC, 
       b.PM_MAD_CAT_CODE as CATEGORY, 
       c.MPC_MIN_QTY as CAT_SS, 
       a.MR_MAX_LEAD_TIME as LEAD_TIME, 
       a.MR_MAD as MAD, 
       ROUND((a.MR_MAD * a.MR_MAX_LEAD_TIME)) as CAL_SS, 
       greatest(ROUND((a.MR_MAD * a.MR_MAX_LEAD_TIME)),c.MPC_MIN_QTY) as SS,
       d.SOH as SOH, 
       d.SOO as SOO,
       (select sum(back_order) from STK_REQUEST where part_code=b.part_code) as BO,
       (d.SOH+a.MR_SOO) as AVAIL,
       ((d.SOH + a.MR_SOO)-greatest(ROUND((a.MR_MAD * a.MR_MAX_LEAD_TIME)),c.MPC_MIN_QTY)) as ROQ,
       (d.SOH - greatest(ROUND((a.MR_MAD * a.MR_MAX_LEAD_TIME)),c.MPC_MIN_QTY) ) as VAR,
       a.MR_REMARKS as REMARKS           
    from ROQ a, PART_MASTER b, MAD_PARTS_CATEGORY c, PART_STATS d
    where a.MR_PART_CODE = b.PART_CODE
    and d.PART_CODE = b.PART_CODE
    and b.PM_MAD_CAT_CODE = c.MPC_CAT_CODE
    and b.RETIRE_FLAG = 'N'
    and a.mr_year = (select max(mr_year) from roq)
    and a.mr_month = (select max(mr_month) from roq where mr_year= (select max(mr_year) from roq))
    and a.mr_period = (select max(mr_period) from roq where mr_month=(select max(mr_month) from roq where mr_year= (select max(mr_year) from roq)) and mr_year= (select max(mr_year) from roq))
    and     greatest(ROUND((a.MR_MAD * a.MR_MAX_LEAD_TIME)),c.MPC_MIN_QTY) > d.SOH`

该查询在Toad for Oracle中运行良好，但当我尝试在DataAdapter对象中设置为新查询时，它显然失败了。它在下面这一行显示类似于"Error in list of function arguments: SELECT not recognized“的内容：(select sum(back_order) from STK_REQUEST where part_code=b.part_code) as BO

我做错什么了？

仅供参考，数据库为Oracle。

Answer 1

这似乎是某个ASP类试图解析您的SQL时的一个例外。如果消息来自Oracle，则会出现ORA-xxxxx错误号。

你不应该把SQL像那样放在ASP中。相反，创建一个视图，也许这样就可以了。