For fields of type Text, you can select Prefix Characters and enter a number n of characters in the text box below. The records which are identical in the first n characters will be grouped together. For fields of type Date/Time, you can group the records by the same year, quarter, month, week, day, hour, or minute.
对于“文本”类型字段，您可以选择“前缀字符”并在下面的文本框中输入一个数字 n 代表字符数目。所有前 n 个字符相同的记录将会被分在一个组中。