S
- SECURITY LABEL
- seg
- sepgsql
- Sequence relation
- Server Programming Interface (SPI)
- Server utility
- session_preload_libraries
- set_join_pathlist_hook
- set_rel_pathlist_hook
- shared_preload_libraries
- shmem_startup_hook
- Slash command
- smgr
- snapshot_too_old
- sort_mem
- spi
- split_part()
- sqlite_fdw
- SQL/MED
- sslinfo
- ssl_passphrase_command
- ssl_passphrase_command_supports_reload
- standby_mode
- Statistics collector
- stmt_beg
- stmt_end
- Storage parameters
- string_to_table()
- superuser_reserved_connections
- suppress_redundant_updates_trigger
- System catalogue
- System catalogue tables
- System catalogue views
- System statistics views