数据库中字符率比较与特殊索引

Comparison of Word Series and Special Index in Database

研究了数据库中字符串比较的根本规则，给出了正确使用条件短语、关系表达式的注意要点；分析了对日期字段索引时出现反序错误的根源，总结出解决特殊索引的若干方法。

This paper studies the essential rules of comparing words series in database,of fers a few tips on how to use propositional phrases and relation expression, analyzes the causes of counte order errors upon indexing date word sections,and obtains several ways of solving special index.