Techniques for processing database queries including user-defined functions
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United States of America Patent
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May 21, 2013
Grant Date -
Feb 23, 2006
app pub date -
Aug 17, 2004
filing date -
Aug 17, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method, system and article of manufacture for query execution management in a data processing system and, more particularly, for managing execution of queries including user-defined functions. One embodiment includes an operation for managing execution of a query against data of a database. The operation includes receiving a query against the data of the database, the query having at least one query condition including a user-defined function. It is determined whether the user-defined function satisfies a predefined index applicability criterion. If the user-defined function satisfies the predefined index applicability criterion, an index over relevant data of the database is created for the user-defined function. The index is suitable for use in execution of the query against the data of the database to determine a corresponding query result.
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