AWS 添加了对 Postgres 15.2 的支持。在启用 postgis 扩展的情况下升级到此版本失败并显示以下错误消息：
The instance could not be upgraded because there are one or more databases with an older version of PostGIS extension or its dependent extensions (address_standardizer, address_standardizer_data_us, postgis_tiger_geocoder, postgis_topology, postgis_raster) installed. Please upgrade all installations of PostGIS and drop its dependent extensions and try again.
RDS实例已3.1.7安装postgis，并且没有升级扩展的路径。运行精确的升级命令ALTER EXTENSION postgis UPDATE TO "3.1.8";会导致
extension "postgis" has no update path from version "3.1.7" to version "3.1.8"
运行SELECT postgis_extensions_upgrade();应该升级扩展的命令会导致：
Upgrade completed, run …