We have just released version 2.1.1 of the Foreign Data Wrapper for SQLite.
This release can work with PostgreSQL 10, 11, 12, 13 and 14.
This release improves following items :

• Support Insert/Update with generated column
• Support check invalid options
• Bug fixings:
  • Fix issue of accessing fts table on SQLite
  • Fix memory leak

The FDW supports following key features :

• SELECT, INSERT, UPDATE and DELETE of foreign tables
• WHERE clauses is push-downed
• Aggregate is push-downed
• ORDER BY is push-downed
• JOIN is push-downed (LEFT,RIGHT,INNER)
• LIMIT and OFFSET are push-downed (*when all tables queried are fdw)
• Transactions

This is developed by Toshiba Software Engineering & Technology Center.
Please see the repository for details.
Source repository : https://github.com/pgspider/sqlite_fdw

Best Regards,
TAIGA Katayama