Question

我正在尝试获取执行此操作的Access SQL查询（下面的半伪代码）

UPDATE SignIn SET SignIn.Complete=True, CompletedBy=(Select [FirstName] & " " & [LastName] AS EmployeeName From UserList where POid = Forms!HiddenUserCheck!txtPOid), CompletedDateTime=Now()

因此，在运行查询之后，数据库中的数据看起来像

Complete EmployeeName CompletedDateTime
True     John Smith   3/23/2017 8:34:10 AM

更新查询因语法不起作用而无法确定如何解决。

确切的错误消息是

子查询中的备注，OLE或超链接对象无效＆＃39; [FirstName]＆amp; ＆＃34; ＆＃34; ＆安培; [姓氏]＆＃39;

Answer 1

由于Double Exclamation标记，查询可能会失败。而不是

Forms!HiddenUserCheck!txtPOid

尝试

Forms!HiddenUserCheck.txtPOid

您的WHERE Statment

末尾还有一个额外的)

Answer 2

好的，那么你的问题可能是子查询可能会返回多条记录：

UPDATE 
    SignIn 
SET 
    SignIn.Complete=True, 
    CompletedBy = 
        (Select First([FirstName] & " " & [LastName]) AS EmployeeName 
        From UserList 
        Where POid = Forms!HiddenUserCheck!txtPOid), 
    CompletedDateTime = Now()

如果您的名称字段是Memo / LongText字段，则可能是错误的来源。如果是这样，请尝试：

UPDATE 
    SignIn 
SET 
    SignIn.Complete=True, 
    CompletedBy = 
        (Select First(Left([FirstName], 255) & " " & Left([LastName], 255)) AS EmployeeName 
        From UserList 
        Where POid = Forms!HiddenUserCheck!txtPOid), 
    CompletedDateTime = Now()

编辑。

您可以尝试使用 DLookup 作为子查询：

UPDATE 
    SignIn 
SET 
    SignIn.Complete=True, 
    CompletedBy = 
        DLookup("[FirstName] & " " & [LastName]", "UserList", "POid = " & Forms!HiddenUserCheck!txtPOid & ""), 
    CompletedDateTime = Now()

如何将Form的值转换为SQL查询？

2 个答案: