... 3.10.删除表(drop a table) 3.11.删除列(drop a column) 3.12.标识某一列为未使用(unused)(mark a column as unused) ...
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This effectively means that an ALTER operation cannot be used to drop a column on a table that contains an XML column.
这实际上意味着,在包含xml列的表中,不能用ALTER操作删除列。
In cases where the data type of a column can be altered, the list of compatible data types is automatically listed in the data type drop down for each column.
如果列的数据类型可以更改,则兼容数据类型的列表在每个列的数据类型下拉列表中自动列出。
In addition, notice that the header facet that you added to the column in an earlier step is shown with the Drop a component here text.
另外,注意您在前面步骤中向列添加的报头facet,会和Drop a component here文本一起显示。
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