介绍了分散式数据库的特点，详细阐述了常用的查询优化演算法的思想，分析了优缺点，给出了演算法选择的方法。

The characteristics of distributed database are introduced in this paper, common used query optimization algorithms are provided are provided, and the method of selection algorithm is given.

youdao

介绍了分散式数据库的特点，详细阐述了常用的查询优化演算法的思想，分析了优缺点，给出了演算法选择的方法。

The characteristics of distributed database are introduced in this paper, common used query optimization algorithms are provided are provided, and the method of selection algorithm is given.

youdao