Question

有人能引导我朝着正确的方向前进吗？我尝试过尽可能地编辑语法，并搜索了2个小时如何使其工作。但我不能让我的CAST功能正常工作。我做错了什么？

SELECT     dbo_orders.ordernumber, 
       dbo_orders.orderdate, 
       Sum([dbo_Order Details].priceperunit) AS sumofpriceperunit, 
       dbo_orders.producttotal, 
       Sum([dbo_Order Details].costperunit) AS sumofcostperunit, 
       dbo_orders.shippingtotal, 
       dbo_tracking.cost, 
       [dbo_Order Details].dropship, 
       dbo_orders.cartid 
CAST       ([dbo_Tracking].cost) AS number 
FROM       dbo_tracking 
INNER JOIN ([dbo_Order Details] 
INNER JOIN dbo_orders 
ON         [dbo_Order Details].ordernumber = dbo_orders.ordernumber) 
ON         dbo_tracking.numerickey = [dbo_Order Details].ordernumber 
GROUP BY   dbo_orders.ordernumber, 
       dbo_orders.orderdate, 
       dbo_orders.producttotal, 
       dbo_orders.shippingtotal, 
       dbo_tracking.cost, 
       [dbo_Order Details].dropship, 
       dbo_orders.cartid 
HAVING     ((( 
                                        dbo_orders.orderdate)>=(#6/1/2016#) 
                  AND        ( 
                                        dbo_orders.orderdate)<=(#6/30/2016#)));

Answer 1

msaccess强制转换功能

Cint -- cast to integer
Clng -- long
Cdbl -- double
Csng - single
Cstr - string
Cbool - boolean

SELECT clng(fieldName) FROM tableName

https://www.techonthenet.com/access/functions/datatype/cint.php

添加'，'，强制转换字段，删除having子句并添加where子句。你可能想要相应地格式化日期。

    SELECT     dbo_orders.ordernumber, 
           dbo_orders.orderdate, 
           Sum([dbo_Order Details].priceperunit) AS sumofpriceperunit, 
           dbo_orders.producttotal, 
           Sum([dbo_Order Details].costperunit) AS sumofcostperunit, 
           dbo_orders.shippingtotal, 
           dbo_tracking.cost, 
           [dbo_Order Details].dropship, 
           dbo_orders.cartid ,    'added a comma
    CInt       ([dbo_Tracking].cost) AS number  'cast accordingly
    FROM       dbo_tracking 
    INNER JOIN ([dbo_Order Details] 
    INNER JOIN dbo_orders 
    ON         [dbo_Order Details].ordernumber = dbo_orders.ordernumber) 
    ON         dbo_tracking.numerickey = [dbo_Order Details].ordernumber 

where   'added where clause
         dbo_orders.orderdate>=   (#6/1/2016#) 
   AND   dbo_orders.orderdate <=(#6/30/2016#)

    GROUP BY   dbo_orders.ordernumber, 
           dbo_orders.orderdate, 
           dbo_orders.producttotal, 
           dbo_orders.shippingtotal, 
           dbo_tracking.cost, 
           [dbo_Order Details].dropship, 
           dbo_orders.cartid 
 'removed having clause

Answer 2

通常，在MS Access中，您可以使用其中一种类型转换函数：

Cdec([dbo_Tracking].cost) AS number

如果您不想要小数，请检查documentation中您想要的类型。

BTW，强制转换的正确语法包括一个类型。例如：

cast([dbo_Tracking].cost as decimal(20, 4))

Answer 3

您在dbo_orders.cartid

旁边缺少逗号

SQL转换函数语法错误

3 个答案: