Based on bringing forward the GSQL global parsing model and one new concept: EDP (Equivalence Distributed Program), the detailed flow of how to parse the global GSQL statement into an EDP file was introduced.

• 提出空间查询语言的全局解析模型及等价分布程序的概念，给出将全局空间查询语句解析为等价分布程序的方法。