We have just newly released Foreign Data Wrapper for databases with JDBC interface.
This release can work with PostgreSQL 13 and 14.
This FDW is implemented in C language with JDK.
This release supports the following features :
Support multiple aggregate function in target
Support stddev_pop, stddev_samp, var_pop, var_samp
Bug fixes:
Fix issue of DISTINCT inside aggregate function
Fix issue of explicit cast function
This is developed by Toshiba Software Engineering & Technology Center. Please see the repository for details. Source repository : https://github.com/pgspider/jdbc_fdw