这里可以选择表中显示哪些列。
There, you can select which columns are displayed in the table.
处理每个维的属性的步骤之一是，识别出在sql语句中选择哪些维属性作为列。
One of the steps of processing the attributes of each dimension is identifying which attributes from each dimension are to be selected as columns in the SQL statement.
pivot表是这样一种数据表，用户可以动态地选择其中的哪些字段被用作行标题、列标题，以及被显示为每个单元格中的数据。
A pivot table is a table in which the user can dynamically choose which fields are used as the row headings, the column headings, and what is shown as the data in each cell.
pivot表是这样一种数据表，用户可以动态地选择其中的哪些字段被用作行标题、列标题，以及被显示为每个单元格中的数据。
A pivot table is a table in which the user can dynamically choose which fields are used as the row headings, the column headings, and what is shown as the data in each cell.
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