VBA更新查询。将空字段设置为值

我正在尝试为以下对象运行更新命令： 在名为t\u AuditCompliance\u import的表中
如果由“输入的名为“应付时间”的字段为空，则将空值更新为“例外”

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任何帮助都将不胜感激。

您在]和Is之间没有空格，而且您需要在WHERE子句开头留出空格。应该是

DoCmd.RunSQL "UPDATE t_AuditCompliance_import SET t_AuditCompliance_import.[Payable Time Entered By] = ("exception")" _
& " WHERE (((t_AuditCompliance_import.[Payable Time Entered By] Is Null));"

请尝试以下操作：

DoCmd.RunSQL "UPDATE t_AuditCompliance_import SET t_AuditCompliance_import.[Payable Time Entered By] = ""exception"" " _
     & "WHERE (((t_AuditCompliance_import.[Payable Time Entered By] Is Null));"

DoCmd.RunSQL "UPDATE t_AuditCompliance_import SET t_AuditCompliance_import.[Payable Time Entered By] = ""exception"" " _
     & "WHERE (((t_AuditCompliance_import.[Payable Time Entered By] Is Null));"