createdb

Creates a new database.

Synopsis

createdb [<connection-option> ...] [<option> ...] [<dbname> ['<description>']]
createdb -? | --help
createdb -V | --version

Description

createdb creates a new database in a Greenplum Database system.

Normally, the database user who runs 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 .

Options

dbname

The name of the database to be created. The name must be unique among all other databases in the Greenplum system. If not specified, reads from the environment variable PGDATABASE, then PGUSER or defaults to the current system user.

description

A comment to be associated with the newly created database. Descriptions containing white space must be enclosed in quotes.

-D tablespace | –tablespace=tablespace

Specifies the default tablespace for the database. (This name is processed as a double-quoted identifier.)

-e echo

Echo the commands that createdb generates and sends to the server.

-E encoding | –encoding encoding

Character set encoding to use in the new database. Specify a string constant (such as 'UTF8'), an integer encoding number, or DEFAULT to use the default encoding. See the Greenplum Database Reference Guide for information about supported character sets.

-l locale | –locale 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.

-O owner | –owner=owner

The name of the database user who will own the new database. Defaults to the user running this command. (This name is processed as a double-quoted identifier.)

-T template | –template=template

The name of the template from which to create the new database. Defaults to template1. (This name is processed as a double-quoted identifier.)

-V | –version

Print the createdb version and exit.

-? | –help

Show help about createdb command line arguments, and exit.

The options -D, -l, -E, -O, and -T correspond to options of the underlying SQL command CREATE DATABASE; see CREATE DATABASE in the Greenplum Database Reference Guide for more information about them.

Connection Options

-h host | –host=host

The host name of the machine on which the Greenplum master database server is running. If not specified, reads from the environment variable PGHOST or defaults to localhost.

-p port | –port=port

The TCP port on which the Greenplum master database server is listening for connections. If not specified, reads from the environment variable PGPORT or defaults to 5432.

-U username | –username=username

The database role name to connect as. If not specified, reads from the environment variable PGUSER or defaults to the current system role name.

-w | –no-password

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.

-W | –password

Force a password prompt.

–maintenance-db=dbname

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.

Examples

To create the database test using the default options:

createdb test

To create the database demo using the Greenplum master on host gpmaster, port 54321, using the LATIN1 encoding scheme:

createdb -p 54321 -h gpmaster -E LATIN1 demo

See Also

CREATE DATABASE, dropdb