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'\" t .\" Title: createdb .\" Author: The PostgreSQL Global Development Group .\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/> .\" Date: 2021 .\" Manual: PostgreSQL 9.6.23 Documentation .\" Source: PostgreSQL 9.6.23 .\" Language: English .\" .TH "CREATEDB" "1" "2021" "PostgreSQL 9.6.23" "PostgreSQL 9.6.23 Documentation" .\" ----------------------------------------------------------------- .\" * Define some portability stuff .\" ----------------------------------------------------------------- .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .\" http://bugs.debian.org/507673 .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" ----------------------------------------------------------------- .\" * set default formatting .\" ----------------------------------------------------------------- .\" disable hyphenation .nh .\" disable justification (adjust text to left margin only) .ad l .\" ----------------------------------------------------------------- .\" * MAIN CONTENT STARTS HERE * .\" ----------------------------------------------------------------- .SH "NAME" createdb \- create a new PostgreSQL database .SH "SYNOPSIS" .HP \w'\fBcreatedb\fR\ 'u \fBcreatedb\fR [\fIconnection\-option\fR...] [\fIoption\fR...] [\fIdbname\fR\ [\fIdescription\fR]] .SH "DESCRIPTION" .PP createdb creates a new PostgreSQL database\&. .PP Normally, the database user who executes this command becomes the owner of the new database\&. However, a different owner can be specified via the \fB\-O\fR option, if the executing user has appropriate privileges\&. .PP createdb is a wrapper around the SQL command CREATE DATABASE (\fBCREATE_DATABASE\fR(7))\&. There is no effective difference between creating databases via this utility and via other methods for accessing the server\&. .SH "OPTIONS" .PP createdb accepts the following command\-line arguments: .PP \fIdbname\fR .RS 4 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\&. .RE .PP \fIdescription\fR .RS 4 Specifies a comment to be associated with the newly created database\&. .RE .PP \fB\-D \fR\fB\fItablespace\fR\fR .br \fB\-\-tablespace=\fR\fB\fItablespace\fR\fR .RS 4 Specifies the default tablespace for the database\&. (This name is processed as a double\-quoted identifier\&.) .RE .PP \fB\-e\fR .br \fB\-\-echo\fR .RS 4 Echo the commands that createdb generates and sends to the server\&. .RE .PP \fB\-E \fR\fB\fIencoding\fR\fR .br \fB\-\-encoding=\fR\fB\fIencoding\fR\fR .RS 4 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, \(lqSupported Character Sets\(rq, in the documentation\&. .RE .PP \fB\-l \fR\fB\fIlocale\fR\fR .br \fB\-\-locale=\fR\fB\fIlocale\fR\fR .RS 4 Specifies the locale to be used in this database\&. This is equivalent to specifying both \fB\-\-lc\-collate\fR and \fB\-\-lc\-ctype\fR\&. .RE .PP \fB\-\-lc\-collate=\fR\fB\fIlocale\fR\fR .RS 4 Specifies the LC_COLLATE setting to be used in this database\&. .RE .PP \fB\-\-lc\-ctype=\fR\fB\fIlocale\fR\fR .RS 4 Specifies the LC_CTYPE setting to be used in this database\&. .RE .PP \fB\-O \fR\fB\fIowner\fR\fR .br \fB\-\-owner=\fR\fB\fIowner\fR\fR .RS 4 Specifies the database user who will own the new database\&. (This name is processed as a double\-quoted identifier\&.) .RE .PP \fB\-T \fR\fB\fItemplate\fR\fR .br \fB\-\-template=\fR\fB\fItemplate\fR\fR .RS 4 Specifies the template database from which to build this database\&. (This name is processed as a double\-quoted identifier\&.) .RE .PP \fB\-V\fR .br \fB\-\-version\fR .RS 4 Print the createdb version and exit\&. .RE .PP \fB\-?\fR .br \fB\-\-help\fR .RS 4 Show help about createdb command line arguments, and exit\&. .RE .PP The options \fB\-D\fR, \fB\-l\fR, \fB\-E\fR, \fB\-O\fR, and \fB\-T\fR correspond to options of the underlying SQL command CREATE DATABASE (\fBCREATE_DATABASE\fR(7)); see there for more information about them\&. .PP createdb also accepts the following command\-line arguments for connection parameters: .PP \fB\-h \fR\fB\fIhost\fR\fR .br \fB\-\-host=\fR\fB\fIhost\fR\fR .RS 4 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\&. .RE .PP \fB\-p \fR\fB\fIport\fR\fR .br \fB\-\-port=\fR\fB\fIport\fR\fR .RS 4 Specifies the TCP port or the local Unix domain socket file extension on which the server is listening for connections\&. .RE .PP \fB\-U \fR\fB\fIusername\fR\fR .br \fB\-\-username=\fR\fB\fIusername\fR\fR .RS 4 User name to connect as\&. .RE .PP \fB\-w\fR .br \fB\-\-no\-password\fR .RS 4 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\&. .RE .PP \fB\-W\fR .br \fB\-\-password\fR .RS 4 Force createdb to prompt for a password before connecting to a database\&. .sp 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 \fB\-W\fR to avoid the extra connection attempt\&. .RE .PP \fB\-\-maintenance\-db=\fR\fB\fIdbname\fR\fR .RS 4 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\&. This can be a connection string\&. If so, connection string parameters will override any conflicting command line options\&. .RE .SH "ENVIRONMENT" .PP \fBPGDATABASE\fR .RS 4 If set, the name of the database to create, unless overridden on the command line\&. .RE .PP \fBPGHOST\fR .br \fBPGPORT\fR .br \fBPGUSER\fR .RS 4 Default connection parameters\&. \fBPGUSER\fR also determines the name of the database to create, if it is not specified on the command line or by \fBPGDATABASE\fR\&. .RE .PP This utility, like most other PostgreSQL utilities, also uses the environment variables supported by libpq (see Section 32.14, \(lqEnvironment Variables\(rq, in the documentation)\&. .SH "DIAGNOSTICS" .PP In case of difficulty, see CREATE DATABASE (\fBCREATE_DATABASE\fR(7)) and \fBpsql\fR(1) 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\&. .SH "EXAMPLES" .PP To create the database demo using the default database server: .sp .if n \{\ .RS 4 .\} .nf $ \fBcreatedb demo\fR .fi .if n \{\ .RE .\} .PP To create the database demo using the server on host eden, port 5000, using the LATIN1 encoding scheme with a look at the underlying command: .sp .if n \{\ .RS 4 .\} .nf $ \fBcreatedb \-p 5000 \-h eden \-E LATIN1 \-e demo\fR CREATE DATABASE demo ENCODING \*(AqLATIN1\*(Aq; .fi .if n \{\ .RE .\} .SH "SEE ALSO" \fBdropdb\fR(1), CREATE DATABASE (\fBCREATE_DATABASE\fR(7))