... 选定港 p.p. picked ports; ppicked port 选定栏 selection bar 选定列 select column ...
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示例11：收集选定列中包含分布的目录统计信息。
Example 11: Collect catalog statistics on selected columns with distribution.
还可以使用A s子句命名查询中的选定列，从而允许您控制如何显式结果，这也在下一节中讲述。
You can also use an AS clause to name the selected columns in a query. Doing so lets you control how the results are displayed, which is also demonstrated in the next section.
将记录集对象的字段数据成员集合在一起组成一个编辑缓冲区，保持一条记录的选定列。
The recordset object's field data members, taken together, constitute an edit buffer that holds the selected columns of one record.
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