Techniques are described for using stored function instantiations, together with user queries. In one example, a method includes receiving a query from a user that contains one or more parameters. The method further includes comparing one or more parameters of the query with one or more parameters of one or more stored function instantiations. The method further includes determining a pre-existing function instantiation from the one or more stored function instantiations that have one or more parameters in common with the query. The method further includes identifying one or more parameters that are not in common between the query and the pre-existing function instantiation. The method further includes modifying the pre-existing function instantiation into a repurposed function instantiation that incorporates the one or more parameters from the query that are not in common between the query and the pre-existing function instantiation. The method further includes executing the repurposed function instantiation.