D
- Database system identifier
- data_checksums
- data_directory
- data_directory_mode
- Data page checksums
- date_bin()
- date_part()
- date_trunc()
- DBD::Pg
- dblink
- dbsize
- deadlock_timeout
- DEALLOCATE
- debug_assertions
- debug_discard_caches
- debug_pretty_print
- debug_print_parse
- debug_print_plan
- debug_print_query
- debug_print_rewritten
- Declarative partitioning
- decode()
- default_table_access_method
- default_tablespace
- default_toast_compression
- default_transaction_read_only
- default_with_oids
- DELETE
- dict_int
- dict_xsyn
- Direct I/O
- DISCARD
- DO
- DocBook XML
- Domain
- DROP ACCESS METHOD
- DROP AGGREGATE
- DROP CAST
- DROP COLLATION
- DROP CONVERSION
- DROP DATABASE
- dropdb
- DROP DOMAIN
- DROP EVENT TRIGGER
- DROP EXTENSION
- DROP FOREIGN DATA WRAPPER
- DROP FOREIGN TABLE
- DROP FUNCTION
- DROP GROUP
- DROP INDEX
- droplang
- DROP LANGUAGE
- DROP MATERIALIZED VIEW
- DROP OPERATOR
- DROP OPERATOR CLASS
- DROP OPERATOR FAMILY
- DROP OWNED
- DROP POLICY
- DROP PROCEDURE
- DROP PUBLICATION
- DROP ROLE
- DROP ROUTINE
- DROP RULE
- DROP SCHEMA
- DROP SEQUENCE
- DROP SERVER
- DROP STATISTICS
- DROP SUBSCRIPTION
- DROP TABLE
- DROP TABLESPACE
- DROP TEXT SEARCH CONFIGURATION
- DROP TEXT SEARCH DICTIONARY
- DROP TEXT SEARCH PARSER
- DROP TEXT SEARCH TEMPLATE
- DROP TRANSFORM
- DROP TRIGGER
- DROP TYPE
- dropuser
- DROP USER
- DROP USER MAPPING
- DROP VIEW
- DUAL table
- dummy_index_am
- dummy_seclabel
- dynamic_library_path
- dynamic_shared_memory_type