How I can turn on/off subj feature on my AWS RDS PG 11 db?
PostgreSQL has builtin support to perform JIT compilation using LLVM when PostgreSQL is built with --with-llvm.
I found an answer in aws docs:
Support for Just-In-Time (JIT) capability – RDS PostgreSQL 11 instances are created with JIT capability, speeding evaluation of expressions.
To enable this feature, set jit to ON.