create_database man page on BSDOS

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CREATE DATABASE()		 SQL Commands		     CREATE DATABASE()

NAME
       CREATE DATABASE - Creates a new database

SYNOPSIS
       CREATE DATABASE name
	   [ WITH [ LOCATION = 'dbpath' ]
		  [ TEMPLATE = template ]
		  [ ENCODING = encoding ] ]

   INPUTS
       name   The name of a database to create.

       dbpath An alternate filesystem location in which to store the new data‐
	      base, specified as a string  literal;  or	 DEFAULT  to  use  the
	      default location.

       template
	      Name  of	template  from	which  to  create the new database, or
	      DEFAULT to use the default template (template1).

       encoding
	      Multibyte encoding method to use in the new database. Specify  a
	      string  literal name (e.g., 'SQL_ASCII'), or an integer encoding
	      number, or DEFAULT to use the default encoding.

   OUTPUTS
       CREATE DATABASE
	      Message returned if the command completes successfully.

       ERROR: user 'username' is not allowed to create/drop databases
	      You must have the special CREATEDB  privilege  to	 create	 data‐
	      bases.  See CREATE USER [create_user(l)].

       ERROR: createdb: database "name" already exists
	      This  occurs  if	a  database  with  the	name specified already
	      exists.

       ERROR: database path may not contain single quotes
	      The database location dbpath cannot contain single quotes.  This
	      is  required so that the shell commands that create the database
	      directory can execute safely.

       ERROR: CREATE DATABASE: may not be called in a transaction block
	      If you have an explicit transaction block in progress you cannot
	      call CREATE DATABASE. You must finish the transaction first.

       ERROR: Unable to create database directory 'path'.

       ERROR: Could not initialize database directory.
	      These are most likely related to insufficient permissions on the
	      data directory, a full disk, or other file system problems.  The
	      user under which the database server is running must have access
	      to the location.

DESCRIPTION
       CREATE DATABASE creates a new Postgres database.	 The  creator  becomes
       the owner of the new database.

       An  alternate location can be specified in order to, for example, store
       the database on a different disk.  The path  must  have	been  prepared
       with the initlocation [initlocation(1)] command.

       If  the	path  name  does  not contain a slash, it is interpreted as an
       environment variable name, which must be known to the  server  process.
       This way the database administrator can exercise control over locations
       in which databases can be  created.   (A	 customary  choice  is,	 e.g.,
       'PGDATA2'.)  If the server is compiled with ALLOW_ABSOLUTE_DBPATHS (not
       so by default), absolute path names, as identified by a	leading	 slash
       (e.g., '/usr/local/pgsql/data'), are allowed as well.

       By  default,  the  new database will be created by cloning the standard
       system database template1. A different template	can  be	 specified  by
       writing	TEMPLATE  =  name.  In	particular, by writing TEMPLATE = tem‐
       plate0, you can create a virgin database containing only	 the  standard
       objects	predefined  by your version of Postgres. This is useful if you
       wish to avoid copying any installation-local objects that may have been
       added to template1.

       The optional encoding parameter allows selection of the database encod‐
       ing, if your server was compiled with multibyte encoding support.  When
       not  specified,	it  defaults to the encoding used by the selected tem‐
       plate database.

       Optional parameters can be written in any order,	 not  only  the	 order
       illustrated above.

   NOTES
       CREATE DATABASE is a Postgres language extension.

       Use DROP DATABASE [drop_database(l)] to remove a database.

       The  program createdb [createdb [createdb(1)] is a shell script wrapper
       around this command, provided for convenience.

       There are security and data integrity issues involved with using alter‐
       nate  database  locations  specified  with  absolute path names, and by
       default only an environment variable known to the backend may be speci‐
       fied for an alternate location.	See the Administrator's Guide for more
       information.

       Although it is possible to copy a  database  other  than	 template1  by
       specifying  its	name  as the template, this is not (yet) intended as a
       general-purpose COPY DATABASE facility. In particular, it is  essential
       that  the  source  database  be	idle (no data-altering transactions in
       progress) for the duration of the copying  operation.  CREATE  DATABASE
       will  check that no backend processes (other than itself) are connected
       to the source database at the start of the operation, but this does not
       guarantee  that	changes cannot be made while the copy proceeds. There‐
       fore, we recommend that databases used as templates be treated as read-
       only.

       Two  useful flags exist in pg_database for each database: datistemplate
       and datallowconn. datistemplate may be set to indicate that a  database
       is intended as a template for CREATE DATABASE. If this flag is set, the
       database may be cloned by any user with CREATEDB privileges; if	it  is
       not  set,  only	superusers and the owner of the database may clone it.
       If datallowconn is false, then no new connections to that database will
       be  allowed (but existing sessions are not killed simply by setting the
       flag false). The template0 database is normally marked this way to pre‐
       vent modification of it.

USAGE
       To create a new database:

       olly=> create database lusiadas;

       To create a new database in an alternate area ~/private_db:

       $ mkdir private_db
       $ initlocation ~/private_db
       Creating Postgres database system directory /home/olly/private_db/base

       $ psql olly
       Welcome to psql, the PostgreSQL interactive terminal.

       Type:  \copyright for distribution terms
	      \h for help with SQL commands
	      \? for help on internal slash commands
	      \g or terminate with semicolon to execute query
	      \q to quit

       olly=> CREATE DATABASE elsewhere WITH LOCATION = '/home/olly/private_db';
       CREATE DATABASE

COMPATIBILITY
   SQL92
       There  is no CREATE DATABASE statement in SQL92.	 Databases are equiva‐
       lent to catalogs whose creation is implementation-defined.

SQL - Language Statements	 29 March 2001		     CREATE DATABASE()
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