createdb -- create a new PostgreSQL
createdb [option...] [dbname] [description]
createdb creates a new PostgreSQL
Normally, the database user who executes this command becomes the owner of
the new database.
However a different owner can be specified via the -O
option, if the executing user has appropriate privileges.
createdb is a wrapper around the
SQL command CREATE DATABASE.
There is no effective difference between creating databases via
this utility and via other methods for accessing the server.
createdb accepts the following command-line arguments:
Specifies the name of the database to be created. The name must be
unique among all PostgreSQL databases in this cluster.
The default is to create a database with the same name as the
current system user.
Specifies a comment to be associated with the newly created
- -D tablespace
Specifies the default tablespace for the database.
Echo the commands that createdb generates
and sends to the server.
- -l locale
Specifies the locale to be used in this database. This is equivalent
to specifying both --lc-collate and --lc-ctype.
- --lc-collate locale
Specifies the LC_COLLATE setting to be used in this database.
- --lc-ctype locale
Specifies the LC_CTYPE setting to be used in this database.
- -E encoding
Specifies the character encoding scheme to be used in this
database. The character sets supported by the
PostgreSQL server are described in
- -O owner
Specifies the database user who will own the new database.
- -T template
Specifies the template database from which to build this database.
The options -D, -E, -l,
-T correspond to options of the underlying
SQL command CREATE DATABASE; see there for more information
createdb also accepts the following
command-line arguments for connection parameters:
- -h host
Specifies the host name of the machine on which the
server is running. If the value begins with a slash, it is used
as the directory for the Unix domain socket.
- -p port
Specifies the TCP port or the local Unix domain socket file
extension on which the server is listening for connections.
- -U username
User name to connect as.
Never issue a password prompt. If the server requires
password authentication and a password is not available by
other means such as a .pgpass file, the
connection attempt will fail. This option can be useful in
batch jobs and scripts where no user is present to enter a
Force createdb to prompt for a
password before connecting to a database.
This option is never essential, since
createdb will automatically prompt
for a password if the server demands password authentication.
However, createdb will waste a
connection attempt finding out that the server wants a password.
In some cases it is worth typing -W to avoid the extra
If set, the name of the database to create, unless overridden on
the command line.
Default connection parameters. PGUSER also
determines the name of the database to create, if it is not
specified on the command line or by PGDATABASE.
This utility, like most other PostgreSQL utilities,
also uses the environment variables supported by libpq
(see Section 30.13).
In case of difficulty, see CREATE DATABASE and psql for
discussions of potential problems and error messages.
The database server must be running at the
targeted host. Also, any default connection settings and environment
variables used by the libpq front-end
library will apply.
To create the database demo using the default
$ createdb demo
To create the database demo using the
server on host eden, port 5000, using the
LATIN1 encoding scheme with a look at the
$ createdb -p 5000 -h eden -E LATIN1 -e demo
CREATE DATABASE demo ENCODING 'LATIN1';