createdb — create a new PostgreSQL database
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
-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 database.
Specifies the default tablespace for the database. (This name is processed as a double-quoted identifier.)
Echo the commands that createdb generates and sends to the server.
Specifies the character encoding scheme to be used in this database. The character sets supported by the PostgreSQL server are described in Section 23.3.1.
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 database user who will own the new database. (This name is processed as a double-quoted identifier.)
Specifies the template database from which to build this database. (This name is processed as a double-quoted identifier.)
Print the createdb version and exit.
Show help about createdb command line arguments, and exit.
to options of the underlying SQL command CREATE DATABASE; see there for more
information about them.
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
.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
-W to avoid the
extra connection attempt.
Specifies the name of the database to connect to when creating
the new database. If not specified, the
postgres database will be used; if that does not
exist (or if it is the name of the new database being created),
template1 will be used.
If set, the name of the database to create, unless overridden on the command line.
Default connection parameters.
also 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 Section 33.14).
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
the default database server:
To create the database
the server on host
eden, port 5000,
template0 template database,
here is the command-line command and the underlying SQL
createdb -p 5000 -h eden -T template0 -e demo
CREATE DATABASE demo TEMPLATE template0;
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