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'\" t .\" Title: dropdb .\" Author: The PostgreSQL Global Development Group .\" Generator: DocBook XSL Stylesheets v1.76.1 <http://docbook.sf.net/> .\" Date: 2014 .\" Manual: PostgreSQL 9.3.5 Documentation .\" Source: PostgreSQL 9.3.5 .\" Language: English .\" .TH "DROPDB" "1" "2014" "PostgreSQL 9.3.5" "PostgreSQL 9.3.5 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" dropdb \- remove a PostgreSQL database .\" dropdb .SH "SYNOPSIS" .HP \w'\fBdropdb\fR\ 'u \fBdropdb\fR [\fIconnection\-option\fR...] [\fIoption\fR...] \fIdbname\fR .SH "DESCRIPTION" .PP dropdb destroys an existing PostgreSQL database\&. The user who executes this command must be a database superuser or the owner of the database\&. .PP dropdb is a wrapper around the SQL command DROP DATABASE (\fBDROP_DATABASE\fR(7))\&. There is no effective difference between dropping databases via this utility and via other methods for accessing the server\&. .SH "OPTIONS" .PP dropdb accepts the following command\-line arguments: .PP \fIdbname\fR .RS 4 Specifies the name of the database to be removed\&. .RE .PP \fB\-e\fR, \fB\-\-echo\fR .RS 4 Echo the commands that dropdb generates and sends to the server\&. .RE .PP \fB\-i\fR, \fB\-\-interactive\fR .RS 4 Issues a verification prompt before doing anything destructive\&. .RE .PP \fB\-V\fR, \fB\-\-version\fR .RS 4 Print the dropdb version and exit\&. .RE .PP \fB\-\-if\-exists\fR .RS 4 Do not throw an error if the database does not exist\&. A notice is issued in this case\&. .RE .PP \fB\-?\fR, \fB\-\-help\fR .RS 4 Show help about dropdb command line arguments, and exit\&. .RE .PP dropdb also accepts the following command\-line arguments for connection parameters: .PP \fB\-h \fR\fB\fIhost\fR\fR, \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, \fB\-\-port=\fR\fB\fIport\fR\fR .RS 4 Specifies the TCP port or local Unix domain socket file extension on which the server is listening for connections\&. .RE .PP \fB\-U \fR\fB\fIusername\fR\fR, \fB\-\-username=\fR\fB\fIusername\fR\fR .RS 4 User name to connect as\&. .RE .PP \fB\-w\fR, \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, \fB\-\-password\fR .RS 4 Force dropdb to prompt for a password before connecting to a database\&. .sp This option is never essential, since dropdb will automatically prompt for a password if the server demands password authentication\&. However, dropdb 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 in order to drop the target database\&. If not specified, the postgres database will be used; if that does not exist (or is the database being dropped), template1 will be used\&. .RE .SH "ENVIRONMENT" .PP \fBPGHOST\fR, \fBPGPORT\fR, \fBPGUSER\fR .RS 4 Default connection parameters .RE .PP This utility, like most other PostgreSQL utilities, also uses the environment variables supported by libpq (see Section 31.14, \(lqEnvironment Variables\(rq, in the documentation)\&. .SH "DIAGNOSTICS" .PP In case of difficulty, see DROP DATABASE (\fBDROP_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 destroy the database demo on the default database server: .sp .if n \{\ .RS 4 .\} .nf $ \fBdropdb demo\fR .fi .if n \{\ .RE .\} .PP To destroy the database demo using the server on host eden, port 5000, with verification and a peek at the underlying command: .sp .if n \{\ .RS 4 .\} .nf $ \fBdropdb \-p 5000 \-h eden \-i \-e demo\fR Database "demo" will be permanently deleted\&. Are you sure? (y/n) \fBy\fR DROP DATABASE demo; .fi .if n \{\ .RE .\} .SH "SEE ALSO" \fBcreatedb\fR(1), DROP DATABASE (\fBDROP_DATABASE\fR(7))