dropdb1Applicationdropdbremove a PostgreSQL databasedropdbdropdbconnection-optionoptiondbnameDescriptiondropdb destroys an existing
PostgreSQL database.
The user who executes this command must be a database
superuser or the owner of the database.
dropdb is a wrapper around the
SQL command .
There is no effective difference between dropping databases via
this utility and via other methods for accessing the server.
Optionsdropdb> accepts the following command-line arguments:
dbname
Specifies the name of the database to be removed.
Echo the commands that dropdb generates
and sends to the server.
Issues a verification prompt before doing anything destructive.
Do not throw an error if the database does not exist. A notice is issued
in this case.
Print the dropdb version and exit.
Show help about dropdb command line
arguments, and exit.
dropdb 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 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 dropdb to prompt for a
password before connecting to a database.
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
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.
EnvironmentPGHOSTPGPORTPGUSER
Default connection parameters
This utility, like most other PostgreSQL> utilities,
also uses the environment variables supported by libpq>
(see ).
Diagnostics
In case of difficulty, see
and 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.
Examples
To destroy the database demo on the default
database server:
$ dropdb demo
To destroy the database demo using the
server on host eden, port 5000, with verification and a peek
at the underlying command:
$ dropdb -p 5000 -h eden -i -e demoDatabase "demo" will be permanently deleted.
Are you sure? (y/n) yDROP DATABASE demo;See Also