The 2019.2 release introduces GQE (generic query engine) kernels, which are post-bitstream programmable and allow different SQL queries to be accelerated with one xclbin. It is conceptually a big step from per-query design, and a sound example of Xilinx’s acceleration approach.
Each GQE kernel is essentially a programmable pipeline of execution step primitives, which can be enabled or bypassed via run-time configuration.