Title:
DATABASE QUERY METHOD AND SERVER
Document Type and Number:
WIPO Patent Application WO/2015/172533
Kind Code:
A1
Abstract:
Embodiments of the present invention provide a method for querying a columnar memory database. The method comprises: receiving a query request; parsing the query request to acquire a query condition; determining a target column related to the query condition from a columnar memory database; and cyclically performing the following steps till the query of all rows is completed: starting from an [m*(i-1)+1]th row of each target column, storing, into a Cache, data queried in consecutive m rows or data queried in less than m rows at last in all the target columns in the columnar memory database, querying the data stored in the Cache according to the query condition, sending sectionalized query results, and releasing the storage space of the Cache, wherein m is a natural constant, and i is a variable representing the cycled number of times. The method of the present invention reduces data overflow in the query process, and shortens delay of data query.
Inventors:
LI WEIXIN (CN)
WU JIMIN (CN)
CAI LIYUAN (CN)
LIU CHENGHUA (CN)
WU JIMIN (CN)
CAI LIYUAN (CN)
LIU CHENGHUA (CN)
Application Number:
PCT/CN2014/090240
Publication Date:
November 19, 2015
Filing Date:
November 04, 2014
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G06F17/30
Foreign References:
| CN103678556A | 2014-03-26 | |||
| CN102171695A | 2011-08-31 | |||
| CN103631838A | 2014-03-12 | |||
| CN103970870A | 2014-08-06 |
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