ms-access - 使用子表单值更新表

Question

为糟糕的英语语法道歉：这是一个图书销售数据库，我在更新“库存”字段时遇到了一些问题 - 来自图书（book_id，价格，库存）表 - “销售”形式的值，有关于多少种类的子表格以“销售”形式售出的图书数量 (book_id, qty)。请帮忙，谢谢

Answer 1

更新：

如果要编辑记录，可以执行以下操作：

'this will create the recordset variable and a string variable
Dim myR As Recordset
Dim strSQL as String    

'to find the record you want to edit use this and then set your recordset to this query
strSQL = "Select * From Books Where book_id = '" & Me.Book_I_Want_To_Edit_Field & "'"

'make the table strSQL your table to work with
Set myR = CurrentDb.OpenRecordset(strSQL, dbOpenDynaset)


'you can set your subform fields or controls here
Me.Sales_Details.Form.Field_in_subform_to_edit = MyR![Inventory]

'you need this to edit it
myR.Edit

'Modify everything here with vba

'then update it
myR.Update

'clear the variable
Set myR = Nothing

让我知道这样的事情是否会有所帮助，或者您是否需要我对其进行更新。