Qex: Symbolic SQL Query Explorer

@inproceedings{Veanes2010QexSS,
  title={Qex: Symbolic SQL Query Explorer},
  author={Margus Veanes and Nikolai Tillmann and Jonathan de Halleux},
  booktitle={LPAR},
  year={2010}
}
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… CONTINUE READING