Invention Grant
- Patent Title: Determining dynamic statistics based on key value patterns
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Application No.: US15658429Application Date: 2017-07-25
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Publication No.: US10067849B2Publication Date: 2018-09-04
- Inventor: Xiao Di Deng , Shuo Li , Shu Hua Liu , Wei Liu , Meng Wan , Xiaobo Wang , Xin Ying Yang , Chen Xin Yu , Xiong Wei Zhao
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Erik K. Johnson; Reza Sarbakhsh
- Main IPC: G06F17/30
- IPC: G06F17/30 ; G06F11/34

Abstract:
A method for dynamically updating database statistics and a plurality of access paths associated with at least one database table is provided. The method may include identifying at least one dynamically changing column associated with the at least one database table. The method may further include determining at least one predicate pattern associated with the identified at least one dynamically changing column. Additionally, the method may include dynamically detecting at least one range change associated with the determined at least one predicate pattern based on at least one record insert. The method may also include updating the plurality of database statistics associated with the identified at least one dynamically changing column based on the dynamically detected at least one range change. The method may further include determining at least one filter factor based on the updated plurality of database statistics associated with the identified at least one dynamically changing column.
Public/Granted literature
- US20170344454A1 DETERMINING DYNAMIC STATISTICS BASED ON KEY VALUE PATTERNS Public/Granted day:2017-11-30
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