VB环境下用MapObjects实现SQL复合查询，功能类似于ArcView中的SQL查询功能。-VB using MapObjects environment to achieve complex SQL queries, functions similar to ArcView functionality of SQL query.

重点讲解vbsql的用法，里面有许多实例，讲解的非常详细适合初学者！-Highlighting vbsql usage, which has many examples to explain in great detail for beginners!