总计数据 meaning in English

summary data

Although users who are proficient in sql or xpath can extract the date information that is required to total data by year , even they might find it difficult to compose a query for questions based on other aspects of time , such as show sales by day of week or show a breakdown by fiscal year , starting on july 1
尽管精通sql或xpath的用户可以提取按年度总计数据所需要的日期信息，但即使是这样的用户也可能会发现很难基于时间的其他方面来为问题编写查询，例如“按星期几显示销售额”或“从七月一日开始，按会计年度显示明细。 ”