VI. Reference

The entries in this Reference are meant to provide in reasonable length an authoritative, complete, and formal summary about their respective subjects. More information about the use of PostgreSQL, in narrative, tutorial, or example form, may be found in other parts of this book. See the cross-references listed on each reference page.

The reference entries are also available as traditional "man" pages.

Table of Contents
I. SQL Commands
ABORT -- abort the current transaction
ALTER AGGREGATE -- change the definition of an aggregate function
ALTER CONVERSION -- change the definition of a conversion
ALTER DATABASE -- change a database
ALTER DOMAIN --  change the definition of a domain
ALTER FUNCTION -- change the definition of a function
ALTER GROUP -- change a user group
ALTER LANGUAGE -- change the definition of a procedural language
ALTER OPERATOR CLASS -- change the definition of an operator class
ALTER SCHEMA -- change the definition of a schema
ALTER SEQUENCE --  alter the definition of a sequence generator
ALTER TABLE -- change the definition of a table
ALTER TRIGGER -- change the definition of a trigger
ALTER USER -- change a database user account
ANALYZE -- collect statistics about a database
BEGIN -- start a transaction block
CHECKPOINT -- force a transaction log checkpoint
CLOSE -- close a cursor
CLUSTER -- cluster a table according to an index
COMMENT -- define or change the comment of an object
COMMIT -- commit the current transaction
COPY -- copy data between a file and a table
CREATE AGGREGATE -- define a new aggregate function
CREATE CAST -- define a new cast
CREATE CONSTRAINT TRIGGER -- define a new constraint trigger
CREATE CONVERSION -- define a new conversion
CREATE DATABASE -- create a new database
CREATE DOMAIN -- define a new domain
CREATE FUNCTION -- define a new function
CREATE GROUP -- define a new user group
CREATE INDEX -- define a new index
CREATE LANGUAGE -- define a new procedural language
CREATE OPERATOR -- define a new operator
CREATE OPERATOR CLASS -- define a new operator class
CREATE RULE -- define a new rewrite rule
CREATE SCHEMA -- define a new schema
CREATE SEQUENCE -- define a new sequence generator
CREATE TABLE -- define a new table
CREATE TABLE AS -- create a new table from the results of a query
CREATE TRIGGER -- define a new trigger
CREATE TYPE -- define a new data type
CREATE USER -- define a new database user account
CREATE VIEW -- define a new view
DEALLOCATE -- deallocate a prepared statement
DECLARE -- define a cursor
DELETE -- delete rows of a table
DROP AGGREGATE -- remove an aggregate function
DROP CAST -- remove a cast
DROP CONVERSION -- remove a conversion
DROP DATABASE -- remove a database
DROP DOMAIN -- remove a domain
DROP FUNCTION -- remove a function
DROP GROUP -- remove a user group
DROP INDEX -- remove an index
DROP LANGUAGE -- remove a procedural language
DROP OPERATOR -- remove an operator
DROP OPERATOR CLASS -- remove an operator class
DROP RULE -- remove a rewrite rule
DROP SCHEMA -- remove a schema
DROP SEQUENCE -- remove a sequence
DROP TABLE -- remove a table
DROP TRIGGER -- remove a trigger
DROP TYPE -- remove a data type
DROP USER -- remove a database user account
DROP VIEW -- remove a view
END -- commit the current transaction
EXECUTE -- execute a prepared statement
EXPLAIN -- show the execution plan of a statement
FETCH -- retrieve rows from a query using a cursor
GRANT -- define access privileges
INSERT -- create new rows in a table
LISTEN -- listen for a notification
LOAD -- load or reload a shared library file
LOCK -- lock a table
MOVE -- position a cursor
NOTIFY -- generate a notification
PREPARE -- prepare a statement for execution
REINDEX -- rebuild indexes
RESET -- restore the value of a run-time parameter to the default value
REVOKE -- remove access privileges
ROLLBACK -- abort the current transaction
SELECT -- retrieve rows from a table or view
SELECT INTO -- create a new table from the results of a query
SET -- change a run-time parameter
SET CONSTRAINTS -- set the constraint mode of the current transaction
SET SESSION AUTHORIZATION -- set the session user identifier and the current user identifier of the current session
SET TRANSACTION -- set the characteristics of the current transaction
SHOW -- show the value of a run-time parameter
START TRANSACTION -- start a transaction block
TRUNCATE -- empty a table
UNLISTEN -- stop listening for a notification
UPDATE -- update rows of a table
VACUUM -- garbage-collect and optionally analyze a database
II. PostgreSQL Client Applications
clusterdb -- cluster a PostgreSQL database
createdb -- create a new PostgreSQL database
createlang -- define a new PostgreSQL procedural language
createuser -- define a new PostgreSQL user account
dropdb -- remove a PostgreSQL database
droplang -- remove a PostgreSQL procedural language
dropuser -- remove a PostgreSQL user account
ecpg -- embedded SQL C preprocessor
pg_config -- retrieve information about the installed version of PostgreSQL
pg_dump --  extract a PostgreSQL database into a script file or other archive file
pg_dumpall -- extract a PostgreSQL database cluster into a script file
pg_restore --  restore a PostgreSQL database from an archive file created by pg_dump
pgtclsh --  PostgreSQL Tcl shell client
pgtksh --  PostgreSQL Tcl/Tk shell client
psql --  PostgreSQL interactive terminal
vacuumdb -- garbage-collect and analyze a PostgreSQL database
III. PostgreSQL Server Applications
initdb -- create a new PostgreSQL database cluster
initlocation -- create a secondary PostgreSQL database storage area
ipcclean -- remove shared memory and semaphores from an aborted PostgreSQL server
pg_controldata -- display control information of a PostgreSQL database cluster
pg_ctl -- start, stop, or restart a PostgreSQL server
pg_resetxlog -- reset the write-ahead log and other control information of a PostgreSQL database cluster
postgres -- run a PostgreSQL server in single-user mode
postmaster -- PostgreSQL multiuser database server