数据窗口查询不遵守 ORDER BY 子句答案

【问题标题】：Datawindow query is not respecting ORDER BY clause数据窗口查询不遵守 ORDER BY 子句
【发布时间】：2015-05-18 08:27:11
【问题描述】：

我正在开发一个表格，以便有一个用于采购目的的订单。

我的主窗体中有一个数据窗口作为报表对象。这个数据窗口（子报告）有一个选择来检索该订单表格的订单行。除了ORDER BY 子句外，一切正常。我需要按订单行号 (orderline.orderlineno) 对订单行进行降序排序。

我已经通过 Sybase Central > Interactive SQL 尝试了 SQL 语句，它以所需的顺序显示记录，但是在我的应用程序中使用该表单时，它显示按 orderline.forcompid 排序的记录。很奇怪

我的 SQL 语句中是否有任何错误或 Power Builder 中缺少的其他内容？

数据窗口（子报表）SQL

( SELECT orderline.orderlineno,   
         orderline.name,   
         orderline.unitid,   
         orderline.quantity,   
         orderline.makerref,   
         orderline.price, 
orderline.discount , 
         orderline.currencycode,
         orderline.linecontent,
         orderline.workorderid,
         componenttype.compname,   
         componenttype.comptype,   
         componentunit.compno,   
         componentunit.serialno,   
         workorder.compjobid,
         workorder.title, 
            workorder.woorigin
,orderline.notes

    FROM orderline,   
         componenttype,   
         componentunit,   
         workorder  
   WHERE ( componentunit.comptypeid = componenttype.comptypeid ) and  
         ( componentunit.compid = orderline.forcompid ) and  
         ( orderline.workorderid = workorder.workorderid ) and 
         ( orderline.orderid = :ll_OrderID ) AND  
         ( orderline.status = 1 ) AND
         ( orderline.includeonform <> 0 ) 
union
  SELECT orderline.orderlineno,   
         orderline.name,   
         orderline.unitid,   
         orderline.quantity,   
         orderline.makerref,   
         orderline.price,   
orderline.discount ,
         orderline.currencycode,
         orderline.linecontent,
         orderline.workorderid,
         componenttype.compname,   
         componenttype.comptype,   
         componentunit.compno,   
         componentunit.serialno,    
         0,
         NULL,
         0 
,orderline.notes

    FROM orderline,   
         componenttype,   
         componentunit   
   WHERE orderline.workorderid IS NULL AND
         ( componentunit.comptypeid = componenttype.comptypeid ) and  
         ( componentunit.compid = orderline.forcompid ) and  
         ( orderline.orderid = :ll_OrderID ) AND  
         ( orderline.status = 1 ) AND
         ( orderline.includeonform <> 0 ) 

union
  SELECT orderline.orderlineno,   
         orderline.name,   
         orderline.unitid,   
         orderline.quantity,   
         orderline.makerref,   
         orderline.price,   
orderline.discount ,
         orderline.currencycode,
         orderline.linecontent,   
         orderline.workorderid,
         NULL,   
         NULL, 
         NULL, 
         NULL,  
         workorder.compjobid,
         workorder.title,
            workorder.woorigin 
,orderline.notes
    FROM orderline, 
         workorder  

    WHERE orderline.forcompid IS NULL AND 
         ( orderline.workorderid = workorder.workorderid ) and 
         ( orderline.orderid = :ll_OrderID ) AND  
         ( orderline.status = 1 ) AND 
         ( orderline.includeonform <> 0 ) 

union
  SELECT orderline.orderlineno,   
         orderline.name,   
         orderline.unitid,   
         orderline.quantity,   
         orderline.makerref,   
         orderline.price, 
orderline.discount ,  
         orderline.currencycode,
         orderline.linecontent, 
         orderline.workorderid,  
         NULL,   
         NULL, 
         NULL, 
         NULL, 
         0, 
         NULL, 
         0   
,orderline.notes
    FROM orderline

    WHERE orderline.forcompid IS NULL AND 
         ( orderline.workorderid IS NULL ) and 
         ( orderline.orderid = :ll_OrderID ) AND  
         ( orderline.status = 1 ) AND 
         ( orderline.includeonform <> 0 ) 
) 
ORDER BY 1 ASC

** 编辑：修改后的 SQL **

SELECT orderline.orderlineno,
 orderline.name,   
         orderline.unitid,   
         orderline.quantity,   
         orderline.makerref,   
         orderline.price, 
         orderline.discount, 
         orderline.currencycode,
         orderline.linecontent,
         orderline.workorderid,
         componenttype.compname,   
         componenttype.comptype,   
         componentunit.compno,   
         componentunit.serialno,   
         workorder.compjobid,
         workorder.title, 
     workorder.woorigin,
         orderline.notes

FROM

( SELECT 
         A.orderlineno AS LineNo,   
         A.name as LineName ,   
         A.unitid AS Unit,   
         A.quantity As Qty,   
         A.makerref AS Maker,   
         A.price AS Price, 
         A.discount As Dsc, 
         A.currencycode As Curr,
         A.linecontent As content,
         A.workorderid AS WOID,
         B.compname AS CName,   
         B.comptype As CType,   
         C.compno AS CNo,   
         C.serialno As Serial,   
         D.compjobid AS CJob,
         D.title As Tit, 
         D.woorigin AS WOor,
         A.notes As Nots

    FROM orderline A,   
         componenttype B,   
         componentunit C,   
         workorder D 
   WHERE ( C.comptypeid = B.comptypeid ) and  
         ( C.compid = A.forcompid ) and  
         ( A.workorderid = D.workorderid ) and 
         ( A.orderid = 40003774 ) AND  
         ( A.status = 1 ) AND
         ( A.includeonform <> 0 ) 
union
  SELECT 
         A1.orderlineno AS LineNo,   
         A1.name as LineName ,   
         A1.unitid AS Unit,   
         A1.quantity As Qty,   
         A1.makerref AS Maker,   
         A1.price AS Price, 
         A1.discount As Dsc, 
         A1.currencycode As Curr,
         A1.linecontent As content,
         A1.workorderid AS WOID,
         B1.compname AS CName,   
         B1.comptype As CType,   
         C1.compno AS CNo,   
         C1.serialno As Serial,   
         0,
         NULL, 
         0,
        A1.notes As Nots

    FROM orderline A1,   
         componenttype B1,   
         componentunit C1  
   WHERE A1.workorderid IS NULL AND
         ( C1.comptypeid = B1.comptypeid ) and  
         ( C1.compid = A1.forcompid ) and  
         ( A1.orderid = 40003774 ) AND  
         ( A1.status = 1 ) AND
         ( A1.includeonform <> 0 ) 

union
  SELECT 

         A2.orderlineno AS LineNo,   
         A2.name as LineName ,   
         A2.unitid AS Unit,   
         A2.quantity As Qty,   
         A2.makerref AS Maker,   
         A2.price AS Price, 
         A2.discount As Dsc, 
         A2.currencycode As Curr,
         A2.linecontent As content,
         A2.workorderid AS WOID,
         NULL,  
         NULL,  
         NULL,   
         NULL,   
         B2.compjobid AS CJob,
         B2.title As Tit, 
         B2.woorigin AS WOor,
         A2.notes As Nots


    FROM orderline A2, 
         workorder B2  

    WHERE A2.forcompid IS NULL AND 
         ( A2.workorderid = B2.workorderid ) and 
         ( A2.orderid = 40003774 ) AND  
         ( A2.status = 1 ) AND 
         ( A2.includeonform <> 0 ) 

union
  SELECT 

         A3.orderlineno AS LineNo,   
         A3.name as LineName ,   
         A3.unitid AS Unit,   
         A3.quantity As Qty,   
         A3.makerref AS Maker,   
         A3.price AS Price, 
         A3.discount As Dsc, 
         A3.currencycode As Curr,
         A3.linecontent As content,
         A3.workorderid AS WOID,
         NULL,   
         NULL,   
         NULL,   
         NULL,  
         0,
         NULL, 
         0,
         A3.notes As Nots

    FROM orderline A3

    WHERE A3.forcompid IS NULL AND 
         ( A3.workorderid IS NULL ) and 
         ( A3.orderid = 40003774 ) AND  
         ( A3.status = 1 ) AND 
         ( A3.includeonform <> 0 ) 

)
         orderline,   
         componenttype,   
         componentunit,   
         workorder

ORDER BY 1 ASC

【问题讨论】：

外部选择的样子
@Sachu 我已经添加了主窗体的Sql语句。
我在询问select ...(select... union select...)orderby 1 asc
没有外部选择。我只是在应用 ORDER BY 子句之前添加了括号来封装 SQL。去掉括号结果和之前一样
像select orderline.orderlineno,....from(select...union select...union)orderby 1 asc这样做一些事情，给内部选择中的每一列提供别名并在外部选择中使用它。这样我在我的pgms中实现排序。不知道它是否会解决你的问题

标签： sql sql-order-by sybase powerbuilder datawindow

【解决方案1】：

按照步骤..

首先为 select 语句中的列提供别名。因为它的并集，所以别名应该在所有查询中匹配。
使用别名进行外部选择，并使用所需列的别名进行排序。

**请记住，order by 会影响执行时间..

看下面的示例

SELECT  LineNo,
        LineName,   
        Unit,   
        QTY,   
         .......

FROM

( SELECT 
         A.orderlineno AS LineNo,   
         A.name as LineName ,   
         A.unitid AS Unit,   
         A.quantity As Qty,   
         ...........

    FROM orderline A,   
         componenttype B,   
         componentunit C,   
         workorder D 
   WHERE ( C.comptypeid = B.comptypeid ) and  
         ( C.compid = A.forcompid ) and  
         ( A.workorderid = D.workorderid ) and 
         ( A.orderid = 40003774 ) AND  
         ( A.status = 1 ) AND
         ( A.includeonform <> 0 ) 
union
  SELECT 
         A1.orderlineno AS LineNo,   
         A1.name as LineName ,   
         A1.unitid AS Unit,   
         A1.quantity As Qty,   
        .........

    FROM orderline A1,   
         componenttype B1,   
         componentunit C1  
   WHERE A1.workorderid IS NULL AND
         ( C1.comptypeid = B1.comptypeid ) and  
         ( C1.compid = A1.forcompid ) and  
         ( A1.orderid = 40003774 ) AND  
         ( A1.status = 1 ) AND
         ( A1.includeonform <> 0 ) 

union
  ........
) AS t1

ORDER BY LineNo ASC

【讨论】：

很高兴听到它有帮助。

【解决方案2】：

您的 SQL 很好。还不如在工会上取消订单。在数据窗口本身中设置排序顺序。将要排序的列拖到右侧并取消选中升序框。这总是会覆盖 SQL 排序。

【讨论】：