db=# \help
可用的说明：
ABORT
ALTER
AGGREGATE
ALTER COLLATION
ALTER CONVERSION
ALTER
DATABASE
ALTER DEFAULT PRIVILEGES
ALTER DOMAIN
ALTER EVENT TRIGGER
ALTER EXTENSION
ALTER FOREIGN DATA
WRAPPER
ALTER FOREIGN TABLE
ALTER FUNCTION
ALTER
GROUP
ALTER INDEX
ALTER LANGUAGE
ALTER LARGE
OBJECT
ALTER MATERIALIZED VIEW
ALTER OPERATOR
ALTER OPERATOR CLASS
ALTER OPERATOR FAMILY
ALTER
ROLE
ALTER RULE
ALTER SCHEMA
ALTER
SEQUENCE
ALTER SERVER
ALTER TABLE
ALTER
TABLESPACE
ALTER TEXT SEARCH CONFIGURATION
ALTER TEXT SEARCH
DICTIONARY
ALTER TEXT SEARCH PARSER
ALTER TEXT SEARCH
TEMPLATE
ALTER TRIGGER
ALTER TYPE
ALTER
USER
ALTER USER MAPPING
ALTER VIEW
ANALYZE
BEGIN
CHECKPOINT
CLOSE
CLUSTER
COMMENT
COMMIT
COMMIT PREPARED
COPY
CREATE AGGREGATE
CREATE CAST
CREATE
COLLATION
CREATE CONVERSION
CREATE DATABASE
CREATE
DOMAIN
CREATE EVENT TRIGGER
CREATE EXTENSION
CREATE FOREIGN DATA WRAPPER
CREATE FOREIGN TABLE
CREATE
FUNCTION
CREATE GROUP
CREATE INDEX
CREATE
LANGUAGE
CREATE MATERIALIZED VIEW
CREATE OPERATOR
CREATE OPERATOR CLASS
CREATE OPERATOR FAMILY
CREATE
ROLE
CREATE RULE
CREATE SCHEMA
CREATE
SEQUENCE
CREATE SERVER
CREATE TABLE
CREATE TABLE
AS
CREATE TABLESPACE
CREATE TEXT SEARCH
CONFIGURATION
CREATE TEXT SEARCH DICTIONARY
CREATE TEXT
SEARCH PARSER
CREATE TEXT SEARCH TEMPLATE
CREATE
TRIGGER
CREATE TYPE
CREATE USER
CREATE USER
MAPPING
CREATE VIEW
DEALLOCATE
DECLARE
DELETE
DISCARD
DO
DROP
AGGREGATE
DROP CAST
DROP COLLATION
DROP
CONVERSION
DROP DATABASE
DROP DOMAIN
DROP EVENT
TRIGGER
DROP EXTENSION
DROP FOREIGN DATA WRAPPER
DROP
FOREIGN TABLE
DROP FUNCTION
DROP GROUP
DROP
INDEX
DROP LANGUAGE
DROP MATERIALIZED VIEW
DROP
OPERATOR
DROP OPERATOR CLASS
DROP OPERATOR
FAMILY
DROP OWNED
DROP ROLE
DROP RULE
DROP
SCHEMA
DROP SEQUENCE
DROP SERVER
DROP
TABLE
DROP TABLESPACE
DROP TEXT SEARCH
CONFIGURATION
DROP TEXT SEARCH DICTIONARY
DROP TEXT SEARCH
PARSER
DROP TEXT SEARCH TEMPLATE
DROP TRIGGER
DROP
TYPE
DROP USER
DROP USER MAPPING
DROP
VIEW
END
EXECUTE
EXPLAIN
FETCH
GRANT
INSERT
LISTEN
LOAD
LOCK
MOVE
NOTIFY
PREPARE
PREPARE
TRANSACTION
REASSIGN OWNED
REFRESH MATERIALIZED
VIEW
REINDEX
RELEASE
SAVEPOINT
RESET
REVOKE
ROLLBACK
ROLLBACK
PREPARED
ROLLBACK TO SAVEPOINT
SAVEPOINT
SECURITY
LABEL
SELECT
SELECT INTO
SET
SET
CONSTRAINTS
SET ROLE
SET SESSION AUTHORIZATION
SET
TRANSACTION
SHOW
START
TRANSACTION
TABLE
TRUNCATE
UNLISTEN
UPDATE
VACUUM
VALUES
WITH
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