The following bug has been logged on the website:
Bug reference: 16835
Logged by: Hongyan (Heather) Zhang
Email address: zhangh3(at)aetna(dot)com
PostgreSQL version: 11.9
Operating system: aurora postgres 11
Description:
https://www.postgresql.org/docs/11/indexes-types.html, according to this
page, btree index is supposed to work for where clause col like 'foo%', but
does not work for me. we are on aurora postgres 11, I also tested on
postgres 11, it does not work either.