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1. (WO2018182058) JOIN METHOD FOR RELATIONAL DATABASE

Pub. No.:    WO/2018/182058    International Application No.:    PCT/KR2017/003320
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Wed Mar 29 01:59:59 CEST 2017
IPC: G06F 17/30
Applicants: REALTIMETECH CO., LTD.
(주)리얼타임테크
Inventors: KANG, Johyeon
강조현
BEAK, Seongin
백성인
HAN, Hyoek
한혁
JIN, Seongil
진성일
Title: JOIN METHOD FOR RELATIONAL DATABASE
Abstract:
The present invention relates to a join method for a relational database, by which a join condition for a table having a range value including an integer column and having sequentially sorted indexed data values is reversed to reduce the number of operations for a comparison operation between two tables to be joined, thereby enabling range join to be efficiently performed, and as a table has more data to be compared, the performance of a range search can be improved.