L
- 大对象
- lastval()
- lc_collate
- lc_ctype
- lcm()
- lc_monetary
- ldap_password_hook
- least()
- left()
- length()
- libpgcommon
- libpq
- LISTEN
- listen_addresses
- ln()
- lo
- LOAD
- local_preload_libraries
- localtime
- localtimestamp
- LOCK
- lock_timeout
- lo_compat_privileges
- lo_from_bytea()
- log()
- log10()
- log_autovacuum_min_duration
- log_btree_build_stats
- log_checkpoints
- log_connections
- log_destination
- log_directory
- log_disconnections
- log_duration
- log_error_verbosity
- lo_get()
- log_executor_stats
- log_file_mode
- log_filename
- logging_collector
- logical_decoding_work_mem
- 逻辑复制
- login_hook
- log_line_prefix
- log_lock_waits
- log_min_duration_sample
- log_min_duration_statement
- log_min_messages
- log_parameter_max_length
- log_parameter_max_length_on_error
- log_parser_stats
- log_planner_stats
- log_recovery_conflict_waits
- log_replication_commands
- log_restartpoints
- log_rotation_age
- log_rotation_size
- log_startup_progress_interval
- log_statement
- log_statement_sample_rate
- log_statement_stats
- log_temp_files
- log_timezone
- log_transaction_sample_rate
- lo_put()
- lower()
- lower_inc()
- lower_inf()
- lower(range)
- lpad()
- LSN（日志序列号）
- ltree
- ltrim()