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Transforming SQL Queries with Table Subqueries

  • US 20070219943A1
  • Filed: 03/19/2006
  • Published: 09/20/2007
  • Est. Priority Date: 03/19/2006
  • Status: Abandoned Application
First Claim
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1. A computer-implemented method for transformation of an SQL query comprising Table Subqueries comprising the steps of:

  • a) identifying each table subquery that does not return any grouped or aggregated rows;

    b) iteratively removing each table subquery and replacing with a logically equivalent table expression with no intervening derived table.

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