QUERY PROCESSING MANAGEMENT IN A DATABASE MANAGEMENT SYSTEM

QUERY PROCESSING MANAGEMENT IN A DATABASE MANAGEMENT SYSTEM

Disclosed aspects relate to query processing management in a database management system (DBMS). The DBMS may detect that a query has a set of subqueries. The DBMS may detect that the set of subqueries indicates a set of data structures. A lead data structure may be selected from the set of data stru...

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Hauptverfasser: Hao, Zhang, Beavin, Thomas A, Wang, Xiaobo, Wei, Ke Wei, Li, Shuo
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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creator Hao, Zhang
Beavin, Thomas A
Wang, Xiaobo
Wei, Ke Wei
Li, Shuo
description Disclosed aspects relate to query processing management in a database management system (DBMS). The DBMS may detect that a query has a set of subqueries. The DBMS may detect that the set of subqueries indicates a set of data structures. A lead data structure may be selected from the set of data structures using a selection criterion. A set of input columns may be identified from the lead data structure of the set of data structures. A set of output columns may be identified from the set of data structures other than the lead data structure. A hash data structure may be constructed using the set of input columns and the set of output columns. A cache may be built based on the hash data structure.
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subjects CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
title QUERY PROCESSING MANAGEMENT IN A DATABASE MANAGEMENT SYSTEM
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