1. A computing system comprising: an enterprise software application configured for issuing an input query; a multidimensional data source; and a data access service configured for executing on a computing environment between the enterprise software application and the multidimensional data source and receiving an input query from an enterprise software application, wherein the data access service includes: a query parser, configured for parsing the input query into a parse tree; a query planner, configured for generating an abstract syntax tree based on the parse tree, the abstract syntax tree comprising input query elements and multidimensional expression query elements based on the input query; a query metadata engine, configured for performing an evaluation of metadata comprised in the multidimensional expression query elements of the abstract syntax tree, enabling the query planner to restructure the abstract syntax tree based on the evaluation of the metadata; and a query execution engine, configured for executing a query based on the restructured abstract syntax tree on the multidimensional data source, and retrieving a query result set from the multidimensional data source comprising results that are responsive to the query based on the restructured abstract syntax tree.