注意: 数据将从所有列中删除，即使未在此步骤中选择所有列。例如，如果选择 Column1 和 Column2，但不选择 Column3，则用于查找重复项的“键”是两列 1 & Column2 的值。 如果在这些列中找到了重复项，则将删除整个行，包括表或区域中的其他列。

若要在 Outlook.com 中获取支持，请单击此处或选择菜单栏上的帮助，然后输入查询。 如果自助服务无法解决问题，请向下滚动到“仍需要帮助？”，然后选择“是”。 若要在 Outlook.com 中联系我们，需要登录。

This article explains how to use a type of function in Access called an aggregate function to sum the data in a query result set. This article also briefly explains how to use other aggregate functions, such as COUNT and AVG to count or average the values in a result set. In addition, this article explains how to use the Total Row, a feature in Access that you use to sum data without having to ...

解决激活错误. 如果 Microsoft 365 无法激活，其最后会变为未授权，且 Microsoft 365 的所有编辑功能都会被禁用。 Microsoft 可能由于多种原因变为未授权。

Get help and learn how to use Skype with Microsoft's official support page.

为什么需要验证码？ 当你登录到你的 Microsoft 帐户时，我们可能会要求提供其他证明，证明确实是你的帐户。 最多可以添加 10 种不同的方法来验证登录，并且可以选择：

The exception to this is if you turn off the setting that disables all non-essential connected experiences. The service that roams your privacy settings across devices is also turned off by that switch, so when that setting is off your settings will not roam to, or from, that particular device.

In the upper left corner of the window, select the app launcher > All apps > SharePoint Tip: If you don't see the SharePoint app under All apps, use the Search box near the top of the window to search for SharePoint.

Add an emoji. To add an emoji to a message, tap Emoji beneath the box, choose an emoji gallery including Smilies, Hand gestures, People, Animals, Food, Travel and places, Objects, Activities, and Symbols, and then choose the emoji that you want to send.. Even more fun and expressiveness is here with an expanded selection of over 800 emojis over nine galleries that introduce a wide range of ...

Учебный курс. Посмотрите и узнайте, как использовать OneDrive для отправки, хранения, редактирования и обмена файлами.