Solution and the method of calculation are presented. At last, the general method of calculating the recognition of the query condition is proposed.
最后，给出了查询条件识别的一般算法。
参考来源 - 关于数据库汉语查询语句中查询信息的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
"Query condition" must be selected!
“查询条件”必须选择！
XML query includes content query and structural query. The query condition can be represented as a simple path expression (SPE) or a regular path expression (RPE).
XML查询包含内容查询和结构查询，其查询条件可表示为简单路径表达式(SPE)和正则路径路径表达式(RPE)。
As long as nothing is entered or selected, the condition is not part of the query yet.
只要没有输入或选择任何内容，则该条件还不是查询的一部分。
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