Query optimization in a parallel computer system with multiple networks
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United States of America Patent
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Aug 19, 2014
Grant Date -
Jul 18, 2013
app pub date -
Mar 5, 2013
filing date -
Aug 7, 2007
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Abstract
A database query optimizer optimizes a query that uses multiple networks. The database query optimizer optimizes a query that uses multiple networks to satisfy the query by splitting the query execution to use multiple networks. Thus, the query optimizer rewrites or optimizes a query to execute on multiple nodes or networks to more efficiently execute the query and reduce network traffic on a network. The query optimizer uses plan cache statistics to determine whether to use multiple networks to optimize the query.
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