SQL structure analyzer
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United States of America Patent
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Dec 15, 2009
Grant Date -
Jun 2, 2005
app pub date -
Sep 7, 2004
filing date -
Sep 6, 2003
priority date (Note) -
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Abstract
A method to addresses structural performance problems of a database query language statement is provided. The method includes receiving a database query language statement at an optimizer, evaluating choices in a search space to generate an execution plan for the statement, and producing annotations to record one or more reasons for selecting each choice while generating the execution plan.
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