CREATE DATABASE(7)	PostgreSQL 9.2.24 Documentation	    CREATE DATABASE(7)



NAME
       CREATE_DATABASE - create a new database

SYNOPSIS
       CREATE DATABASE name
	   [ [ WITH ] [ OWNER [=] user_name ]
		  [ TEMPLATE [=] template ]
		  [ ENCODING [=] encoding ]
		  [ LC_COLLATE [=] lc_collate ]
		  [ LC_CTYPE [=] lc_ctype ]
		  [ TABLESPACE [=] tablespace_name ]
		  [ CONNECTION LIMIT [=] connlimit ] ]

DESCRIPTION
       CREATE DATABASE creates a new PostgreSQL database.

       To create a database, you must be a superuser or have the special
       CREATEDB privilege. See CREATE USER (CREATE_USER(7)).

       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 template0,
       you can create a virgin database containing only the standard objects
       predefined by your version of PostgreSQL. This is useful if you wish to
       avoid copying any installation-local objects that might have been added
       to template1.

PARAMETERS
       name
	   The name of a database to create.

       user_name
	   The role name of the user who will own the new database, or DEFAULT
	   to use the default (namely, the user executing the command). To
	   create a database owned by another role, you must be a direct or
	   indirect member of that role, or be a superuser.

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

       encoding
	   Character set encoding to use in the new database. Specify a string
	   constant (e.g., 'SQL_ASCII'), or an integer encoding number, or
	   DEFAULT to use the default encoding (namely, the encoding of the
	   template database). The character sets supported by the PostgreSQL
	   server are described in Section 22.3.1, "Supported Character Sets",
	   in the documentation. See below for additional restrictions.

       lc_collate
	   Collation order (LC_COLLATE) to use in the new database. This
	   affects the sort order applied to strings, e.g. in queries with
	   ORDER BY, as well as the order used in indexes on text columns. The
	   default is to use the collation order of the template database. See
	   below for additional restrictions.

       lc_ctype
	   Character classification (LC_CTYPE) to use in the new database.
	   This affects the categorization of characters, e.g. lower, upper
	   and digit. The default is to use the character classification of
	   the template database. See below for additional restrictions.

       tablespace_name
	   The name of the tablespace that will be associated with the new
	   database, or DEFAULT to use the template database's tablespace.
	   This tablespace will be the default tablespace used for objects
	   created in this database. See CREATE TABLESPACE
	   (CREATE_TABLESPACE(7)) for more information.

       connlimit
	   How many concurrent connections can be made to this database. -1
	   (the default) means no limit.

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

NOTES
       CREATE DATABASE cannot be executed inside a transaction block.

       Errors along the line of "could not initialize database directory" are
       most likely related to insufficient permissions on the data directory,
       a full disk, or other file system problems.

       Use DROP DATABASE (DROP_DATABASE(7)) to remove a database.

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

       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. The principal limitation is
       that no other sessions can be connected to the template database while
       it is being copied.  CREATE DATABASE will fail if any other connection
       exists when it starts; otherwise, new connections to the template
       database are locked out until CREATE DATABASE completes. See Section
       21.3, "Template Databases", in the documentation for more information.

       The character set encoding specified for the new database must be
       compatible with the chosen locale settings (LC_COLLATE and LC_CTYPE).
       If the locale is C (or equivalently POSIX), then all encodings are
       allowed, but for other locale settings there is only one encoding that
       will work properly. (On Windows, however, UTF-8 encoding can be used
       with any locale.)  CREATE DATABASE will allow superusers to specify
       SQL_ASCII encoding regardless of the locale settings, but this choice
       is deprecated and may result in misbehavior of character-string
       functions if data that is not encoding-compatible with the locale is
       stored in the database.

       The encoding and locale settings must match those of the template
       database, except when template0 is used as template. This is because
       other databases might contain data that does not match the specified
       encoding, or might contain indexes whose sort ordering is affected by
       LC_COLLATE and LC_CTYPE. Copying such data would result in a database
       that is corrupt according to the new settings.  template0, however, is
       known to not contain any data or indexes that would be affected.

       The CONNECTION LIMIT option is only enforced approximately; if two new
       sessions start at about the same time when just one connection "slot"
       remains for the database, it is possible that both will fail. Also, the
       limit is not enforced against superusers.

EXAMPLES
       To create a new database:

	   CREATE DATABASE lusiadas;

       To create a database sales owned by user salesapp with a default
       tablespace of salesspace:

	   CREATE DATABASE sales OWNER salesapp TABLESPACE salesspace;

       To create a database music which supports the ISO-8859-1 character set:

	   CREATE DATABASE music ENCODING 'LATIN1' TEMPLATE template0;

       In this example, the TEMPLATE template0 clause would only be required
       if template1's encoding is not ISO-8859-1. Note that changing encoding
       might require selecting new LC_COLLATE and LC_CTYPE settings as well.

COMPATIBILITY
       There is no CREATE DATABASE statement in the SQL standard. Databases
       are equivalent to catalogs, whose creation is implementation-defined.

SEE ALSO
       ALTER DATABASE (ALTER_DATABASE(7)), DROP DATABASE (DROP_DATABASE(7))



PostgreSQL 9.2.24		  2017-11-06		    CREATE DATABASE(7)