Question

基本SQL UPDATE和Access 2007 vba问题。有人可以向我解释为什么这个查询也在更新BoxType“60ct托运人托盘”而不只是更新WHERE声明中声明的60ct托运人件？谢谢！

ElseIf Me!txtBoxType = "60ct Shipper Tray" Then

 'Cases that use a 60tray are more complicated. They use 1 each of the base, header, and display
 'aswell as 3 shelves.

qdf.SQL = "UPDATE tblBoxList Set Qty = (Qty+(" & Me!txtQtyChange & ")) WHERE BoxType = '60ct Shipper Base' OR '60ct Shipper Header' OR '60ct Shipper Display';"
qdf.Execute dbFailOnError

Answer 1

您需要在OR的每个条件中包含字段名称。使用SELECT查询来计算WHERE子句逻辑。

SELECT *
FROM tblBoxList 
WHERE
       BoxType = '60ct Shipper Base'
    OR BoxType = '60ct Shipper Header'
    OR BoxType = '60ct Shipper Display'

您可能更喜欢这种方法。

WHERE BoxType IN
    (
        '60ct Shipper Base',
        '60ct Shipper Header',
        '60ct Shipper Display'
    )

SQL UPDATE / WHERE帮助...更新WHERE未定义的列

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