PostgreSQL分析器的研究

Study of the PostgreSQL's parser

介绍了对象关系数据库系统 ＰｏｓｔｇｒｅＳＱＬ的内部结构、查询处理的过程及 ＰｏｓｔｇｒｅＳＱＬ语法／词法分析器的实现，并通过一个 ＳＱＬ语句实例，分析了 ＰｏｓｔｇｒｅＳＱＬ语法／词法分析器的内部结构，最后给出Ｑｕｅｒｙ树的详细数据结构图示．

The inner structure of the PostgreSQL--Object relation database system and query process and implementation of the PostgreSQL's parser are proposed. The authors also gave a example and analyzed the inner structure of the PostgreSQL's parser. Finally, they showed the chart of the Query tree which is generated by the PostgerSQL's parser.