|The PostgreSQL 9.0 Reference Manual - Volume 1B - SQL Command Reference
by The PostgreSQL Global Development Group
Paperback (6"x9"), 488 pages
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createdb -- create a new PostgreSQL database
createdb [connection-option...] [option...] [dbname] [description]
createdb creates a new PostgreSQL database.
Normally, the database user who executes this command becomes the owner of
the new database.
However, a different owner can be specified via the
option, if the executing user has appropriate privileges.
createdb is a wrapper around the
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 database.
- Specifies the default tablespace for the database.
- Echo the commands that createdb generates and sends to the server.
Specifies the locale to be used in this database. This is equivalent
to specifying both
- Specifies the LC_COLLATE setting to be used in this database.
- Specifies the LC_CTYPE setting to be used in this database.
- Specifies the character encoding scheme to be used in this database. The character sets supported by the PostgreSQL server are described in Volume 3: Supported Character Sets.
- Specifies the database user who will own the new database.
- Specifies the template database from which to build this database.
- Print the createdb version and exit.
- Show help about createdb command line arguments, and exit.
-T correspond to options of the underlying
CREATE DATABASE; see there for more information
createdb also accepts the following command-line arguments for connection parameters:
- 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.
- Specifies the TCP port or the local Unix domain socket file extension on which the server is listening for connections.
- 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 password.
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
-Wto avoid the extra connection attempt.
- If set, the name of the database to create, unless overridden on the command line.
Default connection parameters.
PGUSERalso determines the name of the database to create, if it is not specified on the command line or by
This utility, like most other PostgreSQL utilities, also uses the environment variables supported by libpq (see Volume 2: Environment Variables).
In case of difficulty, see
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';
|ISBN 9781906966058||The PostgreSQL 9.0 Reference Manual - Volume 1B - SQL Command Reference||See the print edition|