Qex: Symbolic SQL Query Explorer

We describe a technique and a tool called Qex for generating input tables and parameter values for a given parameterized SQL query. The evaluation semantics of an SQL query is translated into a specific background theory for a satisfiability modulo theories (SMT) solver as a set of equational axioms. Symbolic evaluation of a goal formula together with the background theory yields a model from which concrete tables and values are extracted. We use the SMT solver Z3 in the concrete implementation of Qex and provide an evaluation of its performance.

qex-TR.pdf
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Publisher  Microsoft Research
© 2009 Microsoft Corporation. All rights reserved.

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TypeTechReport
NumberMSR-TR-2009-2015
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