To use the SQL Parser in your own code, you only need to include `SQLParser.h` and build+link all the source files from the parser with your project. See [`hyrise/src/lib/access/sql/SQLQueryParser.cpp`](https://github.com/hyrise/hyrise/blob/master/src/lib/access/sql/SQLQueryParser.cpp) for how it's used in Hyrise.
HYRISE sql-parser is licensed as open source after the OpenSource "Licence of the Hasso-Plattner Institute" declared in the LICENSE file of this project.