Home Database Mysql Tutorial Access入门教程9.5为查询添加和删除目标字段

Access入门教程9.5为查询添加和删除目标字段

Jun 07, 2016 pm 04:02 PM
access Getting Started Tutorial delete Field Inquire Add to Target

现在我们就要往查询设计表格中添加字段了 所添加的字段叫做 目标字段 向查询表格中添加目标字段有两种方法 第一种方法可以在表格中选择一个空白的列 单击第一行对应的一格 格子的右边出现一个带下箭头的按钮 单击这个按钮出现下拉框 在下拉框中就可以选择相

    现在我们就要往查询设计表格中添加字段了所添加的字段叫做目标字段向查询表格中添加目标字段有两种方法

    第一种方法可以在表格中选择一个空白的列单击第一行对应的一格格子的右边出现一个带下箭头的按钮单击这个按钮出现下拉框在下拉框中就可以选择相应的目标字段了选中表订单信息表中的订单号字段

    如果在几个表中都有同样的字段要怎么区分呢?当我们在查询表格的第一格的下拉框中寻找对应目标字段时在字段前面都有字段所在的表格/查询名订单信息表产品名称字段就表示它是订单信息表中的产品名称字段而不是别的表或查询中的产品名称字段这样就不会混淆了

    第二种方法更简单如果要添加订单信息表中的订货单位字段就先选中订单信息表这个表然后在它的列表框中找到需要的字段订货单位将鼠标移动到列表框中标有这个字段的选项上按住鼠标左键这时鼠标光标变成一个长方块拖动鼠标将长方块拖到下方查询表格中的一个空白列放开鼠标左键这样就完成了将订单信息表中的订货单位字段添加到查询表格中了表/查询窗口中如果有很多对象时这种方法就比第一种方法显得方便多了

    如果要删除一个目标字段将鼠标移动到要删除的目标字段所在列的选择条上光标会变成一个向下的箭头单击鼠标左键将这一列都选中敲击键盘上的DELETE选中的目标字段就被删除了

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