orientdb sql之间没有按预期工作

Question

我有一个带有文档样式存储的orientdb数据库。 我有一个MyDocument类，有大约300,000条记录，以循环方式存储（没有自定义聚类策略）。

我有一个数字字段，以yyyyMMdd的方式告诉我存储日，它不是唯一的SBtree索引。

直到我查询如下：

select from MyDocument where publishDay=20151101

效果很好：我每天大约有100条记录。

如果我使用范围疼痛开始：

 select from MyDocument where publishDay between 20151101 and 20151102

如果我从控制台执行此查询，则返回0条记录。

如果我从网络应用程序执行此操作，则说

"fetched more than 50000 records: to speed up the execution, create an index or change the query to use an existent index"

但我已经有了一个索引，所以在特定日期我似乎无法做更多的查询。 也是一个技巧，如：

select * from inputdocument where publishday = 20150102 or publishday = 20150101

BTW我使用版本2.0.15

我做错了吗？我是否通过这种用法达到了orientdb的极限？

Answer 1

我试图用这个小的osql脚本在OrientDB 2.0.15中重现你的数据库：

create class MyDocument extends V;

create property MyDocument.publishDay integer;

create vertex MyDocument set publishDay = 20151101;
create vertex MyDocument set publishDay = 20151101;
create vertex MyDocument set publishDay = 20151101;
create vertex MyDocument set publishDay = 20151101;
create vertex MyDocument set publishDay = 20151101;
create vertex MyDocument set publishDay = 20151101;
create vertex MyDocument set publishDay = 20151102;
create vertex MyDocument set publishDay = 20151102;
create vertex MyDocument set publishDay = 20151102;
create vertex MyDocument set publishDay = 20151102;
create vertex MyDocument set publishDay = 20151102;
create vertex MyDocument set publishDay = 20151102;
create vertex MyDocument set publishDay = 20151103;
create vertex MyDocument set publishDay = 20151103;
create vertex MyDocument set publishDay = 20151103;
create vertex MyDocument set publishDay = 20151103;
create vertex MyDocument set publishDay = 20151103;
create vertex MyDocument set publishDay = 20151103;
create vertex MyDocument set publishDay = 20151104;
create vertex MyDocument set publishDay = 20151104;
create vertex MyDocument set publishDay = 20151104;
create vertex MyDocument set publishDay = 20151104;
create vertex MyDocument set publishDay = 20151104;
create vertex MyDocument set publishDay = 20151104;
create vertex MyDocument set publishDay = 20151105;
create vertex MyDocument set publishDay = 20151105;
create vertex MyDocument set publishDay = 20151105;
create vertex MyDocument set publishDay = 20151105;
create vertex MyDocument set publishDay = 20151105;
create vertex MyDocument set publishDay = 20151105;
create vertex MyDocument set publishDay = 20151106;
create vertex MyDocument set publishDay = 20151106;
create vertex MyDocument set publishDay = 20151106;
create vertex MyDocument set publishDay = 20151106;
create vertex MyDocument set publishDay = 20151106;
create vertex MyDocument set publishDay = 20151106;

create index MyDocument.publishDay NOTUNIQUE;

我将属性“publishDay”声明为整数，并在“publishDay”上创建了一个NOTUNIQUE索引。

并且您的查询有效

也按索引搜索

您的架构有什么不同吗？

Answer 2

我认为您已经定义了一个HASHINDEX，根据定义，它不能处理范围。尝试使用NOTUNIQUE索引（SBTree算法）