基于SQL的双编号树结构数据研究

针对SQL Server中的树模型结构数据的汇总方法进行研究与充分的实验，分别给出单编号与双编号树形结构数据逐级汇总的多种不同的方法与相应的Transact—SQL源代码。论述在程序设计过程中，使用树形控件、SQL语句、临时表等多种手段，达到多个关联数据库的数据由一个可视化树形结构控件显示的方法和技巧。

Research on Double Identity Tree Model Structure Data Based on SQL

Mainly discusses many different summary methods of tree model structure database,and gives the step by step summary methods Transact-SQL code of single identity tree model structure data and double identity tree model structure data.So that the summary of tree model structure of the database becomes more accurate and efficient,and gets more broad application prospects.