QUERY EXECUTION UTILIZING NEGATION OF A LOGICAL CONNECTIVE

QUERY EXECUTION UTILIZING NEGATION OF A LOGICAL CONNECTIVE

A database system operates by determining a query operator execution flow that includes a negation of a logical connective indicating a first column of a plurality of rows in a first operand of the logical connective and indicating a second column of the plurality of rows in a second operand of the...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Ashbeck, Matthew, Dhuse, Greg R
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:A database system operates by determining a query operator execution flow that includes a negation of a logical connective indicating a first column of a plurality of rows in a first operand of the logical connective and indicating a second column of the plurality of rows in a second operand of the logical connective; and facilitating execution of the negation of the logical connective of the query operator execution flow against the plurality of rows utilizing first and second index data of a probabilistic indexing scheme on first and second columns of the plurality of rows.