{"Entry":{"collection":"tool","key":"dropdb","name":"dropdb","aliases":["dropdb"],"metadata":{"aliases":["dropdb"],"category":"Client applications","content_hash":"6e632f31c0cc278959e5b41cfbfba5d59e1490114204428f2642f4bbf9c0e99e","imported_at":"2026-09-30T00:40:33.908047+08:00","name":"dropdb","name_zh":"","slug":"dropdb","summary":"dropdb — remove a PostgreSQL database"}},"Definition":{"Collection":"tool","Key":"dropdb","SourceDatabase":"center","Version":"18","SourceTable":"command_tool","SourceKey":"dropdb","SourceRevision":"ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8","Facts":{"comparison_data":{"environment":[{"description":"Default connection parameters","name":"PGHOST PGPORT PGUSER"},{"description":"Specifies whether to use color in diagnostic messages. Possible values are always , auto and never .","name":"PG_COLOR"}],"options":[{"description":"Echo the commands that dropdb generates and sends to the server.","names":["-e","--echo"],"signature":"-e --echo"},{"description":"Attempt to terminate all existing connections to the target database before dropping it. See DROP DATABASE for more information on this option.","names":["-f","--force"],"signature":"-f --force"},{"description":"Issues a verification prompt before doing anything destructive.","names":["-i","--interactive"],"signature":"-i --interactive"},{"description":"Print the dropdb version and exit.","names":["-V","--version"],"signature":"-V --version"},{"description":"Do not throw an error if the database does not exist. A notice is issued in this case.","names":["--if-exists"],"signature":"--if-exists"},{"description":"Show help about dropdb command line arguments, and exit.","names":["-?","--help"],"signature":"-? --help"},{"description":"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.","names":["-h host","--host= host"],"signature":"-h host --host= host"},{"description":"Specifies the TCP port or local Unix domain socket file extension on which the server is listening for connections.","names":["-p port","--port= port"],"signature":"-p port --port= port"},{"description":"User name to connect as.","names":["-U username","--username= username"],"signature":"-U username --username= username"},{"description":"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.","names":["-w","--no-password"],"signature":"-w --no-password"},{"description":"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 -W to avoid the extra connection attempt.","names":["-W","--password"],"signature":"-W --password"},{"description":"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. This can be a connection string . If so, connection string parameters will override any conflicting command line options.","names":["--maintenance-db= dbname"],"signature":"--maintenance-db= dbname"}],"synopsis":["dropdb [ connection-option ...] [ option ...] dbname"]},"comparison_hash":"8368b5388b640fa11b27e0ba4ea78bf8abf0592bc078a3e0c7726290e0c29225","description":["dropdb — remove a PostgreSQL database"],"environment":[{"description":"Default connection parameters","name":"PGHOST PGPORT PGUSER"},{"description":"Specifies whether to use color in diagnostic messages. Possible values are always , auto and never .","name":"PG_COLOR"}],"facts":[{"label":"Documented executable","value":"dropdb"},{"label":"Executable version","value":"18.6"},{"label":"Reference inventory","value":"Client applications"},{"label":"Option definition groups","value":"12"}],"manual_html":"\u003cdiv\u003e\u003cdiv class=\"refentry\" id=\"APP-DROPDB\"\u003e\n\u003cdiv class=\"titlepage\"\u003e\u003c/div\u003e\n\u003cdiv class=\"refnamediv\"\u003e\n\u003ch2\u003e\u003cspan class=\"refentrytitle\"\u003e\u003cspan class=\"application\"\u003edropdb\u003c/span\u003e\u003c/span\u003e\u003c/h2\u003e\n\u003cp\u003edropdb — remove a \u003cspan class=\"productname\"\u003ePostgreSQL\u003c/span\u003e database\u003c/p\u003e\n\u003c/div\u003e\n\u003cdiv class=\"refsynopsisdiv\"\u003e\n\u003ch2\u003eSynopsis\u003c/h2\u003e\n\u003cdiv class=\"cmdsynopsis\"\u003e\n\u003cp id=\"id-1.9.4.6.4.1\"\u003e\u003ccode class=\"command\"\u003edropdb\u003c/code\u003e [\u003cem class=\"replaceable\"\u003e\u003ccode\u003econnection-option\u003c/code\u003e\u003c/em\u003e...] [\u003cem class=\"replaceable\"\u003e\u003ccode\u003eoption\u003c/code\u003e\u003c/em\u003e...] \u003cem class=\"replaceable\"\u003e\u003ccode\u003edbname\u003c/code\u003e\u003c/em\u003e\u003c/p\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003cdiv class=\"refsect1\" id=\"id-1.9.4.6.5\"\u003e\n\u003ch2\u003eDescription\u003c/h2\u003e\n\u003cp\u003e\u003cspan class=\"application\"\u003edropdb\u003c/span\u003e destroys an existing \u003cspan class=\"productname\"\u003ePostgreSQL\u003c/span\u003e database. The user who executes this command must be a database superuser or the owner of the database.\u003c/p\u003e\n\u003cp\u003e\u003cspan class=\"application\"\u003edropdb\u003c/span\u003e is a wrapper around the SQL command \u003ca class=\"link\" href=\"/docs/18/sql-dropdatabase.html\" title=\"DROP DATABASE\"\u003e\u003ccode class=\"command\"\u003eDROP DATABASE\u003c/code\u003e\u003c/a\u003e. There is no effective difference between dropping databases via this utility and via other methods for accessing the server.\u003c/p\u003e\n\u003c/div\u003e\n\u003cdiv class=\"refsect1\" id=\"id-1.9.4.6.6\"\u003e\n\u003ch2\u003eOptions\u003c/h2\u003e\n\u003cp\u003e\u003cspan class=\"application\"\u003edropdb\u003c/span\u003e accepts the following command-line arguments:\u003c/p\u003e\n\u003cdiv class=\"variablelist\"\u003e\n\u003cdl class=\"variablelist\"\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003cem class=\"replaceable\"\u003e\u003ccode\u003edbname\u003c/code\u003e\u003c/em\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eSpecifies the name of the database to be removed.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-e\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--echo\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eEcho the commands that \u003cspan class=\"application\"\u003edropdb\u003c/span\u003e generates and sends to the server.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-f\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--force\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eAttempt to terminate all existing connections to the target database before dropping it. See \u003ca class=\"xref\" href=\"/docs/18/sql-dropdatabase.html\" title=\"DROP DATABASE\"\u003e\u003cspan class=\"refentrytitle\"\u003eDROP DATABASE\u003c/span\u003e\u003c/a\u003e for more information on this option.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-i\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--interactive\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eIssues a verification prompt before doing anything destructive.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-V\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--version\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003ePrint the \u003cspan class=\"application\"\u003edropdb\u003c/span\u003e version and exit.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--if-exists\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eDo not throw an error if the database does not exist. A notice is issued in this case.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-?\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--help\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eShow help about \u003cspan class=\"application\"\u003edropdb\u003c/span\u003e command line arguments, and exit.\u003c/p\u003e\n\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003cp\u003e\u003cspan class=\"application\"\u003edropdb\u003c/span\u003e also accepts the following command-line arguments for connection parameters:\u003c/p\u003e\n\u003cdiv class=\"variablelist\"\u003e\n\u003cdl class=\"variablelist\"\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-h \u003cem class=\"replaceable\"\u003e\u003ccode\u003ehost\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--host=\u003cem class=\"replaceable\"\u003e\u003ccode\u003ehost\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eSpecifies 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.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-p \u003cem class=\"replaceable\"\u003e\u003ccode\u003eport\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--port=\u003cem class=\"replaceable\"\u003e\u003ccode\u003eport\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eSpecifies the TCP port or local Unix domain socket file extension on which the server is listening for connections.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-U \u003cem class=\"replaceable\"\u003e\u003ccode\u003eusername\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--username=\u003cem class=\"replaceable\"\u003e\u003ccode\u003eusername\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eUser name to connect as.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-w\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--no-password\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eNever issue a password prompt. If the server requires password authentication and a password is not available by other means such as a \u003ccode class=\"filename\"\u003e.pgpass\u003c/code\u003e 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.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-W\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--password\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eForce \u003cspan class=\"application\"\u003edropdb\u003c/span\u003e to prompt for a password before connecting to a database.\u003c/p\u003e\n\u003cp\u003eThis option is never essential, since \u003cspan class=\"application\"\u003edropdb\u003c/span\u003e will automatically prompt for a password if the server demands password authentication. However, \u003cspan class=\"application\"\u003edropdb\u003c/span\u003e will waste a connection attempt finding out that the server wants a password. In some cases it is worth typing \u003ccode class=\"option\"\u003e-W\u003c/code\u003e to avoid the extra connection attempt.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--maintenance-db=\u003cem class=\"replaceable\"\u003e\u003ccode\u003edbname\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eSpecifies the name of the database to connect to in order to drop the target database. If not specified, the \u003ccode class=\"literal\"\u003epostgres\u003c/code\u003e database will be used; if that does not exist (or is the database being dropped), \u003ccode class=\"literal\"\u003etemplate1\u003c/code\u003e will be used. This can be a \u003ca class=\"link\" href=\"/docs/18/libpq-connect.html#LIBPQ-CONNSTRING\" title=\"32.1.1. Connection Strings\"\u003econnection string\u003c/a\u003e. If so, connection string parameters will override any conflicting command line options.\u003c/p\u003e\n\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003cdiv class=\"refsect1\" id=\"id-1.9.4.6.7\"\u003e\n\u003ch2\u003eEnvironment\u003c/h2\u003e\n\u003cdiv class=\"variablelist\"\u003e\n\u003cdl class=\"variablelist\"\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"envar\"\u003ePGHOST\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"envar\"\u003ePGPORT\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"envar\"\u003ePGUSER\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eDefault connection parameters\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"envar\"\u003ePG_COLOR\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eSpecifies whether to use color in diagnostic messages. Possible values are \u003ccode class=\"literal\"\u003ealways\u003c/code\u003e, \u003ccode class=\"literal\"\u003eauto\u003c/code\u003e and \u003ccode class=\"literal\"\u003enever\u003c/code\u003e.\u003c/p\u003e\n\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003cp\u003eThis utility, like most other \u003cspan class=\"productname\"\u003ePostgreSQL\u003c/span\u003e utilities, also uses the environment variables supported by \u003cspan class=\"application\"\u003elibpq\u003c/span\u003e (see \u003ca class=\"xref\" href=\"/docs/18/libpq-envars.html\" title=\"32.15. Environment Variables\"\u003eSection 32.15\u003c/a\u003e).\u003c/p\u003e\n\u003c/div\u003e\n\u003cdiv class=\"refsect1\" id=\"id-1.9.4.6.8\"\u003e\n\u003ch2\u003eDiagnostics\u003c/h2\u003e\n\u003cp\u003eIn case of difficulty, see \u003ca class=\"xref\" href=\"/docs/18/sql-dropdatabase.html\" title=\"DROP DATABASE\"\u003e\u003cspan class=\"refentrytitle\"\u003eDROP DATABASE\u003c/span\u003e\u003c/a\u003e and \u003ca class=\"xref\" href=\"/docs/18/app-psql.html\" title=\"psql\"\u003e\u003cspan class=\"refentrytitle\"\u003e\u003cspan class=\"application\"\u003epsql\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e 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 \u003cspan class=\"application\"\u003elibpq\u003c/span\u003e front-end library will apply.\u003c/p\u003e\n\u003c/div\u003e\n\u003cdiv class=\"refsect1\" id=\"id-1.9.4.6.9\"\u003e\n\u003ch2\u003eExamples\u003c/h2\u003e\n\u003cp\u003eTo destroy the database \u003ccode class=\"literal\"\u003edemo\u003c/code\u003e on the default database server:\u003c/p\u003e\n\u003cpre class=\"screen\"\u003e\u003ccode class=\"prompt\"\u003e$ \u003c/code\u003e\u003cstrong class=\"userinput\"\u003e\u003ccode\u003edropdb demo\u003c/code\u003e\u003c/strong\u003e\n\u003c/pre\u003e\n\u003cp\u003eTo destroy the database \u003ccode class=\"literal\"\u003edemo\u003c/code\u003e using the server on host \u003ccode class=\"literal\"\u003eeden\u003c/code\u003e, port 5000, with verification and a peek at the underlying command:\u003c/p\u003e\n\u003cpre class=\"screen\"\u003e\u003ccode class=\"prompt\"\u003e$ \u003c/code\u003e\u003cstrong class=\"userinput\"\u003e\u003ccode\u003edropdb -p 5000 -h eden -i -e demo\u003c/code\u003e\u003c/strong\u003e\n\u003ccode class=\"computeroutput\"\u003eDatabase \"demo\" will be permanently deleted.\nAre you sure? (y/n) \u003c/code\u003e\u003cstrong class=\"userinput\"\u003e\u003ccode\u003ey\u003c/code\u003e\u003c/strong\u003e\n\u003ccode class=\"computeroutput\"\u003eDROP DATABASE demo;\u003c/code\u003e\n\u003c/pre\u003e\n\u003c/div\u003e\n\u003cdiv class=\"refsect1\" id=\"id-1.9.4.6.10\"\u003e\n\u003ch2\u003eSee Also\u003c/h2\u003e\u003cspan class=\"simplelist\"\u003e\u003ca class=\"xref\" href=\"/docs/18/app-createdb.html\" title=\"createdb\"\u003e\u003cspan class=\"refentrytitle\"\u003e\u003cspan class=\"application\"\u003ecreatedb\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e, \u003ca class=\"xref\" href=\"/docs/18/sql-dropdatabase.html\" title=\"DROP DATABASE\"\u003e\u003cspan class=\"refentrytitle\"\u003eDROP DATABASE\u003c/span\u003e\u003c/a\u003e\u003c/span\u003e\n\u003c/div\u003e\n\u003c/div\u003e\u003c/div\u003e","manual_path":"app-dropdb.html","options":[{"description":"Echo the commands that dropdb generates and sends to the server.","names":["-e","--echo"],"signature":"-e --echo","source_url":"/docs/18/app-dropdb.html","summary":"Echo the commands that dropdb generates and sends to the server."},{"description":"Attempt to terminate all existing connections to the target database before dropping it. See DROP DATABASE for more information on this option.","names":["-f","--force"],"signature":"-f --force","source_url":"/docs/18/app-dropdb.html","summary":"Attempt to terminate all existing connections to the target database before dropping it. See DROP DATABASE for more information on this option."},{"description":"Issues a verification prompt before doing anything destructive.","names":["-i","--interactive"],"signature":"-i --interactive","source_url":"/docs/18/app-dropdb.html","summary":"Issues a verification prompt before doing anything destructive."},{"description":"Print the dropdb version and exit.","names":["-V","--version"],"signature":"-V --version","source_url":"/docs/18/app-dropdb.html","summary":"Print the dropdb version and exit."},{"description":"Do not throw an error if the database does not exist. A notice is issued in this case.","names":["--if-exists"],"signature":"--if-exists","source_url":"/docs/18/app-dropdb.html","summary":"Do not throw an error if the database does not exist. A notice is issued in this case."},{"description":"Show help about dropdb command line arguments, and exit.","names":["-?","--help"],"signature":"-? --help","source_url":"/docs/18/app-dropdb.html","summary":"Show help about dropdb command line arguments, and exit."},{"description":"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.","names":["-h host","--host= host"],"signature":"-h host --host= host","source_url":"/docs/18/app-dropdb.html","summary":"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."},{"description":"Specifies the TCP port or local Unix domain socket file extension on which the server is listening for connections.","names":["-p port","--port= port"],"signature":"-p port --port= port","source_url":"/docs/18/app-dropdb.html","summary":"Specifies the TCP port or local Unix domain socket file extension on which the server is listening for connections."},{"description":"User name to connect as.","names":["-U username","--username= username"],"signature":"-U username --username= username","source_url":"/docs/18/app-dropdb.html","summary":"User name to connect as."},{"description":"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.","names":["-w","--no-password"],"signature":"-w --no-password","source_url":"/docs/18/app-dropdb.html","summary":"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."},{"description":"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 -W to avoid the extra connection attempt.","names":["-W","--password"],"signature":"-W --password","source_url":"/docs/18/app-dropdb.html","summary":"Force dropdb to prompt for a password before connecting to a database."},{"description":"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. This can be a connection string . If so, connection string parameters will override any conflicting command line options.","names":["--maintenance-db= dbname"],"signature":"--maintenance-db= dbname","source_url":"/docs/18/app-dropdb.html","summary":"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. This can be a connection string . If so, connection string parameters will override any conflicting command line options."}],"related":[],"release":{"channel":"stable","evidence_kind":"English manual and source declarations","label":"18.6","major":"18","manifest":{"index":"index.html","major":"18","pages":1148,"pdf":{"A4":{"built_at":"2026-09-26","bytes":15865106,"pages":3154,"sha256":"19512c405da53f9f7fcf0abba359223aa65f021be025bf3411381918f92e3190","url":"/files/documentation/pdf/18/postgresql-18-A4.pdf"},"US":{"built_at":"2026-09-26","bytes":15748059,"pages":3328,"sha256":"facbe6c229e598b872d3d98bef53308f46e06746006fa4590de9a7de9dd46319","url":"/files/documentation/pdf/18/postgresql-18-US.pdf"}},"release":"18.6","source_mode":"en SGML built with pinned official archive","source_sha256":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","source_url":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","svg_assets":3,"tree":"18"},"ref":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","revision":"ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8","source_sha256":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"},"sections":[],"signature":"dropdb [ connection-option ...] [ option ...] dbname","sources":[{"anchor":"","file":"app-dropdb.html","label":"18.6 English manual · app-dropdb.html","sha256":"0a5a5822bf696b52df84777543e8f340c4a5028588d8e193b470471298b88513","url":"/docs/18/app-dropdb.html"},{"anchor":"","file":"reference-client.html","label":"Client applications inventory","sha256":"68f726af77272fe73a827be2b7b5958d0f2239a6f8ed44264e9d42496bfa4fd0","url":"/docs/18/reference-client.html"}],"synopsis":["dropdb [ connection-option ...] [ option ...] dbname"],"tables":[{"columns":[{"key":"signature","label":"Option and arguments"},{"key":"summary","label":"Description"}],"key":"options","rows":[{"signature":{"text":"-e --echo","url":"/docs/18/app-dropdb.html"},"summary":"Echo the commands that dropdb generates and sends to the server."},{"signature":{"text":"-f --force","url":"/docs/18/app-dropdb.html"},"summary":"Attempt to terminate all existing connections to the target database before dropping it. See DROP DATABASE for more information on this option."},{"signature":{"text":"-i --interactive","url":"/docs/18/app-dropdb.html"},"summary":"Issues a verification prompt before doing anything destructive."},{"signature":{"text":"-V --version","url":"/docs/18/app-dropdb.html"},"summary":"Print the dropdb version and exit."},{"signature":{"text":"--if-exists","url":"/docs/18/app-dropdb.html"},"summary":"Do not throw an error if the database does not exist. A notice is issued in this case."},{"signature":{"text":"-? --help","url":"/docs/18/app-dropdb.html"},"summary":"Show help about dropdb command line arguments, and exit."},{"signature":{"text":"-h host --host= host","url":"/docs/18/app-dropdb.html"},"summary":"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."},{"signature":{"text":"-p port --port= port","url":"/docs/18/app-dropdb.html"},"summary":"Specifies the TCP port or local Unix domain socket file extension on which the server is listening for connections."},{"signature":{"text":"-U username --username= username","url":"/docs/18/app-dropdb.html"},"summary":"User name to connect as."},{"signature":{"text":"-w --no-password","url":"/docs/18/app-dropdb.html"},"summary":"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."},{"signature":{"text":"-W --password","url":"/docs/18/app-dropdb.html"},"summary":"Force dropdb to prompt for a password before connecting to a database."},{"signature":{"text":"--maintenance-db= dbname","url":"/docs/18/app-dropdb.html"},"summary":"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. This can be a connection string . If so, connection string parameters will override any conflicting command line options."}],"title":"Documented options"},{"columns":[{"key":"name","label":"Variable"},{"key":"description","label":"Meaning"}],"key":"environment","rows":[{"description":"Default connection parameters","name":"PGHOST PGPORT PGUSER"},{"description":"Specifies whether to use color in diagnostic messages. Possible values are always , auto and never .","name":"PG_COLOR"}],"title":"Environment variables"}]},"ManualEvidence":{"manual_path":"app-dropdb.html","release":{"channel":"stable","evidence_kind":"English manual and source declarations","label":"18.6","major":"18","manifest":{"index":"index.html","major":"18","pages":1148,"pdf":{"A4":{"built_at":"2026-09-26","bytes":15865106,"pages":3154,"sha256":"19512c405da53f9f7fcf0abba359223aa65f021be025bf3411381918f92e3190","url":"/files/documentation/pdf/18/postgresql-18-A4.pdf"},"US":{"built_at":"2026-09-26","bytes":15748059,"pages":3328,"sha256":"facbe6c229e598b872d3d98bef53308f46e06746006fa4590de9a7de9dd46319","url":"/files/documentation/pdf/18/postgresql-18-US.pdf"}},"release":"18.6","source_mode":"en SGML built with pinned official archive","source_sha256":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","source_url":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","svg_assets":3,"tree":"18"},"ref":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","revision":"ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8","source_sha256":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"},"sources":[{"anchor":"","file":"app-dropdb.html","label":"18.6 English manual · app-dropdb.html","sha256":"0a5a5822bf696b52df84777543e8f340c4a5028588d8e193b470471298b88513","url":"/docs/18/app-dropdb.html"},{"anchor":"","file":"reference-client.html","label":"Client applications inventory","sha256":"68f726af77272fe73a827be2b7b5958d0f2239a6f8ed44264e9d42496bfa4fd0","url":"/docs/18/reference-client.html"}]},"MeasuredEvidence":{}},"Text":{"Collection":"tool","Key":"dropdb","SourceDatabase":"center","Version":"18","Locale":"en","Title":"dropdb","Summary":"dropdb — remove a PostgreSQL database","BodyHTML":"\u003cdiv\u003e\u003cdiv id=\"APP-DROPDB\"\u003e\n\u003cdiv\u003e\u003c/div\u003e\n\u003cdiv\u003e\n\u003ch2\u003e\u003cspan\u003e\u003cspan\u003edropdb\u003c/span\u003e\u003c/span\u003e\u003c/h2\u003e\n\u003cp\u003edropdb — remove a \u003cspan\u003ePostgreSQL\u003c/span\u003e database\u003c/p\u003e\n\u003c/div\u003e\n\u003cdiv\u003e\n\u003ch2\u003eSynopsis\u003c/h2\u003e\n\u003cdiv\u003e\n\u003cp id=\"id-1.9.4.6.4.1\"\u003e\u003ccode\u003edropdb\u003c/code\u003e [\u003cem\u003e\u003ccode\u003econnection-option\u003c/code\u003e\u003c/em\u003e...] [\u003cem\u003e\u003ccode\u003eoption\u003c/code\u003e\u003c/em\u003e...] \u003cem\u003e\u003ccode\u003edbname\u003c/code\u003e\u003c/em\u003e\u003c/p\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003cdiv id=\"id-1.9.4.6.5\"\u003e\n\u003ch2\u003eDescription\u003c/h2\u003e\n\u003cp\u003e\u003cspan\u003edropdb\u003c/span\u003e destroys an existing \u003cspan\u003ePostgreSQL\u003c/span\u003e database. The user who executes this command must be a database superuser or the owner of the database.\u003c/p\u003e\n\u003cp\u003e\u003cspan\u003edropdb\u003c/span\u003e is a wrapper around the SQL command \u003ca href=\"/docs/18/sql-dropdatabase.html\" title=\"DROP DATABASE\" rel=\"nofollow\"\u003e\u003ccode\u003eDROP DATABASE\u003c/code\u003e\u003c/a\u003e. There is no effective difference between dropping databases via this utility and via other methods for accessing the server.\u003c/p\u003e\n\u003c/div\u003e\n\u003cdiv id=\"id-1.9.4.6.6\"\u003e\n\u003ch2\u003eOptions\u003c/h2\u003e\n\u003cp\u003e\u003cspan\u003edropdb\u003c/span\u003e accepts the following command-line arguments:\u003c/p\u003e\n\u003cdiv\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cspan\u003e\u003cem\u003e\u003ccode\u003edbname\u003c/code\u003e\u003c/em\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eSpecifies the name of the database to be removed.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan\u003e\u003ccode\u003e-e\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan\u003e\u003ccode\u003e--echo\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eEcho the commands that \u003cspan\u003edropdb\u003c/span\u003e generates and sends to the server.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan\u003e\u003ccode\u003e-f\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan\u003e\u003ccode\u003e--force\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eAttempt to terminate all existing connections to the target database before dropping it. See \u003ca href=\"/docs/18/sql-dropdatabase.html\" title=\"DROP DATABASE\" rel=\"nofollow\"\u003e\u003cspan\u003eDROP DATABASE\u003c/span\u003e\u003c/a\u003e for more information on this option.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan\u003e\u003ccode\u003e-i\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan\u003e\u003ccode\u003e--interactive\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eIssues a verification prompt before doing anything destructive.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan\u003e\u003ccode\u003e-V\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan\u003e\u003ccode\u003e--version\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003ePrint the \u003cspan\u003edropdb\u003c/span\u003e version and exit.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan\u003e\u003ccode\u003e--if-exists\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eDo not throw an error if the database does not exist. A notice is issued in this case.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan\u003e\u003ccode\u003e-?\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan\u003e\u003ccode\u003e--help\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eShow help about \u003cspan\u003edropdb\u003c/span\u003e command line arguments, and exit.\u003c/p\u003e\n\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003cp\u003e\u003cspan\u003edropdb\u003c/span\u003e also accepts the following command-line arguments for connection parameters:\u003c/p\u003e\n\u003cdiv\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cspan\u003e\u003ccode\u003e-h \u003cem\u003e\u003ccode\u003ehost\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan\u003e\u003ccode\u003e--host=\u003cem\u003e\u003ccode\u003ehost\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eSpecifies 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.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan\u003e\u003ccode\u003e-p \u003cem\u003e\u003ccode\u003eport\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan\u003e\u003ccode\u003e--port=\u003cem\u003e\u003ccode\u003eport\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eSpecifies the TCP port or local Unix domain socket file extension on which the server is listening for connections.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan\u003e\u003ccode\u003e-U \u003cem\u003e\u003ccode\u003eusername\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan\u003e\u003ccode\u003e--username=\u003cem\u003e\u003ccode\u003eusername\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eUser name to connect as.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan\u003e\u003ccode\u003e-w\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan\u003e\u003ccode\u003e--no-password\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eNever issue a password prompt. If the server requires password authentication and a password is not available by other means such as a \u003ccode\u003e.pgpass\u003c/code\u003e 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.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan\u003e\u003ccode\u003e-W\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan\u003e\u003ccode\u003e--password\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eForce \u003cspan\u003edropdb\u003c/span\u003e to prompt for a password before connecting to a database.\u003c/p\u003e\n\u003cp\u003eThis option is never essential, since \u003cspan\u003edropdb\u003c/span\u003e will automatically prompt for a password if the server demands password authentication. However, \u003cspan\u003edropdb\u003c/span\u003e will waste a connection attempt finding out that the server wants a password. In some cases it is worth typing \u003ccode\u003e-W\u003c/code\u003e to avoid the extra connection attempt.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan\u003e\u003ccode\u003e--maintenance-db=\u003cem\u003e\u003ccode\u003edbname\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eSpecifies the name of the database to connect to in order to drop the target database. If not specified, the \u003ccode\u003epostgres\u003c/code\u003e database will be used; if that does not exist (or is the database being dropped), \u003ccode\u003etemplate1\u003c/code\u003e will be used. This can be a \u003ca href=\"/docs/18/libpq-connect.html#LIBPQ-CONNSTRING\" rel=\"nofollow\"\u003econnection string\u003c/a\u003e. If so, connection string parameters will override any conflicting command line options.\u003c/p\u003e\n\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003cdiv id=\"id-1.9.4.6.7\"\u003e\n\u003ch2\u003eEnvironment\u003c/h2\u003e\n\u003cdiv\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cspan\u003e\u003ccode\u003ePGHOST\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan\u003e\u003ccode\u003ePGPORT\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan\u003e\u003ccode\u003ePGUSER\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eDefault connection parameters\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan\u003e\u003ccode\u003ePG_COLOR\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eSpecifies whether to use color in diagnostic messages. Possible values are \u003ccode\u003ealways\u003c/code\u003e, \u003ccode\u003eauto\u003c/code\u003e and \u003ccode\u003enever\u003c/code\u003e.\u003c/p\u003e\n\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003cp\u003eThis utility, like most other \u003cspan\u003ePostgreSQL\u003c/span\u003e utilities, also uses the environment variables supported by \u003cspan\u003elibpq\u003c/span\u003e (see \u003ca href=\"/docs/18/libpq-envars.html\" rel=\"nofollow\"\u003eSection 32.15\u003c/a\u003e).\u003c/p\u003e\n\u003c/div\u003e\n\u003cdiv id=\"id-1.9.4.6.8\"\u003e\n\u003ch2\u003eDiagnostics\u003c/h2\u003e\n\u003cp\u003eIn case of difficulty, see \u003ca href=\"/docs/18/sql-dropdatabase.html\" title=\"DROP DATABASE\" rel=\"nofollow\"\u003e\u003cspan\u003eDROP DATABASE\u003c/span\u003e\u003c/a\u003e and \u003ca href=\"/docs/18/app-psql.html\" title=\"psql\" rel=\"nofollow\"\u003e\u003cspan\u003e\u003cspan\u003epsql\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e 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 \u003cspan\u003elibpq\u003c/span\u003e front-end library will apply.\u003c/p\u003e\n\u003c/div\u003e\n\u003cdiv id=\"id-1.9.4.6.9\"\u003e\n\u003ch2\u003eExamples\u003c/h2\u003e\n\u003cp\u003eTo destroy the database \u003ccode\u003edemo\u003c/code\u003e on the default database server:\u003c/p\u003e\n\u003cpre\u003e\u003ccode\u003e$ \u003c/code\u003e\u003cstrong\u003e\u003ccode\u003edropdb demo\u003c/code\u003e\u003c/strong\u003e\n\u003c/pre\u003e\n\u003cp\u003eTo destroy the database \u003ccode\u003edemo\u003c/code\u003e using the server on host \u003ccode\u003eeden\u003c/code\u003e, port 5000, with verification and a peek at the underlying command:\u003c/p\u003e\n\u003cpre\u003e\u003ccode\u003e$ \u003c/code\u003e\u003cstrong\u003e\u003ccode\u003edropdb -p 5000 -h eden -i -e demo\u003c/code\u003e\u003c/strong\u003e\n\u003ccode\u003eDatabase \u0026#34;demo\u0026#34; will be permanently deleted.\nAre you sure? (y/n) \u003c/code\u003e\u003cstrong\u003e\u003ccode\u003ey\u003c/code\u003e\u003c/strong\u003e\n\u003ccode\u003eDROP DATABASE demo;\u003c/code\u003e\n\u003c/pre\u003e\n\u003c/div\u003e\n\u003cdiv id=\"id-1.9.4.6.10\"\u003e\n\u003ch2\u003eSee Also\u003c/h2\u003e\u003cspan\u003e\u003ca href=\"/docs/18/app-createdb.html\" title=\"createdb\" rel=\"nofollow\"\u003e\u003cspan\u003e\u003cspan\u003ecreatedb\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e, \u003ca href=\"/docs/18/sql-dropdatabase.html\" title=\"DROP DATABASE\" rel=\"nofollow\"\u003e\u003cspan\u003eDROP DATABASE\u003c/span\u003e\u003c/a\u003e\u003c/span\u003e\n\u003c/div\u003e\n\u003c/div\u003e\u003c/div\u003e","SourceRevision":"ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8","ContentHash":"02777a610ca56c7e68a2f28e24ecc3e3de27448759cb6e2b03244c46777653d8","Payload":{"description":["dropdb — remove a PostgreSQL database"],"manual_html":"\u003cdiv\u003e\u003cdiv class=\"refentry\" id=\"APP-DROPDB\"\u003e\n\u003cdiv class=\"titlepage\"\u003e\u003c/div\u003e\n\u003cdiv class=\"refnamediv\"\u003e\n\u003ch2\u003e\u003cspan class=\"refentrytitle\"\u003e\u003cspan class=\"application\"\u003edropdb\u003c/span\u003e\u003c/span\u003e\u003c/h2\u003e\n\u003cp\u003edropdb — remove a \u003cspan class=\"productname\"\u003ePostgreSQL\u003c/span\u003e database\u003c/p\u003e\n\u003c/div\u003e\n\u003cdiv class=\"refsynopsisdiv\"\u003e\n\u003ch2\u003eSynopsis\u003c/h2\u003e\n\u003cdiv class=\"cmdsynopsis\"\u003e\n\u003cp id=\"id-1.9.4.6.4.1\"\u003e\u003ccode class=\"command\"\u003edropdb\u003c/code\u003e [\u003cem class=\"replaceable\"\u003e\u003ccode\u003econnection-option\u003c/code\u003e\u003c/em\u003e...] [\u003cem class=\"replaceable\"\u003e\u003ccode\u003eoption\u003c/code\u003e\u003c/em\u003e...] \u003cem class=\"replaceable\"\u003e\u003ccode\u003edbname\u003c/code\u003e\u003c/em\u003e\u003c/p\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003cdiv class=\"refsect1\" id=\"id-1.9.4.6.5\"\u003e\n\u003ch2\u003eDescription\u003c/h2\u003e\n\u003cp\u003e\u003cspan class=\"application\"\u003edropdb\u003c/span\u003e destroys an existing \u003cspan class=\"productname\"\u003ePostgreSQL\u003c/span\u003e database. The user who executes this command must be a database superuser or the owner of the database.\u003c/p\u003e\n\u003cp\u003e\u003cspan class=\"application\"\u003edropdb\u003c/span\u003e is a wrapper around the SQL command \u003ca class=\"link\" href=\"/docs/18/sql-dropdatabase.html\" title=\"DROP DATABASE\"\u003e\u003ccode class=\"command\"\u003eDROP DATABASE\u003c/code\u003e\u003c/a\u003e. There is no effective difference between dropping databases via this utility and via other methods for accessing the server.\u003c/p\u003e\n\u003c/div\u003e\n\u003cdiv class=\"refsect1\" id=\"id-1.9.4.6.6\"\u003e\n\u003ch2\u003eOptions\u003c/h2\u003e\n\u003cp\u003e\u003cspan class=\"application\"\u003edropdb\u003c/span\u003e accepts the following command-line arguments:\u003c/p\u003e\n\u003cdiv class=\"variablelist\"\u003e\n\u003cdl class=\"variablelist\"\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003cem class=\"replaceable\"\u003e\u003ccode\u003edbname\u003c/code\u003e\u003c/em\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eSpecifies the name of the database to be removed.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-e\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--echo\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eEcho the commands that \u003cspan class=\"application\"\u003edropdb\u003c/span\u003e generates and sends to the server.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-f\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--force\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eAttempt to terminate all existing connections to the target database before dropping it. See \u003ca class=\"xref\" href=\"/docs/18/sql-dropdatabase.html\" title=\"DROP DATABASE\"\u003e\u003cspan class=\"refentrytitle\"\u003eDROP DATABASE\u003c/span\u003e\u003c/a\u003e for more information on this option.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-i\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--interactive\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eIssues a verification prompt before doing anything destructive.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-V\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--version\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003ePrint the \u003cspan class=\"application\"\u003edropdb\u003c/span\u003e version and exit.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--if-exists\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eDo not throw an error if the database does not exist. A notice is issued in this case.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-?\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--help\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eShow help about \u003cspan class=\"application\"\u003edropdb\u003c/span\u003e command line arguments, and exit.\u003c/p\u003e\n\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003cp\u003e\u003cspan class=\"application\"\u003edropdb\u003c/span\u003e also accepts the following command-line arguments for connection parameters:\u003c/p\u003e\n\u003cdiv class=\"variablelist\"\u003e\n\u003cdl class=\"variablelist\"\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-h \u003cem class=\"replaceable\"\u003e\u003ccode\u003ehost\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--host=\u003cem class=\"replaceable\"\u003e\u003ccode\u003ehost\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eSpecifies 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.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-p \u003cem class=\"replaceable\"\u003e\u003ccode\u003eport\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--port=\u003cem class=\"replaceable\"\u003e\u003ccode\u003eport\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eSpecifies the TCP port or local Unix domain socket file extension on which the server is listening for connections.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-U \u003cem class=\"replaceable\"\u003e\u003ccode\u003eusername\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--username=\u003cem class=\"replaceable\"\u003e\u003ccode\u003eusername\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eUser name to connect as.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-w\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--no-password\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eNever issue a password prompt. If the server requires password authentication and a password is not available by other means such as a \u003ccode class=\"filename\"\u003e.pgpass\u003c/code\u003e 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.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e-W\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--password\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eForce \u003cspan class=\"application\"\u003edropdb\u003c/span\u003e to prompt for a password before connecting to a database.\u003c/p\u003e\n\u003cp\u003eThis option is never essential, since \u003cspan class=\"application\"\u003edropdb\u003c/span\u003e will automatically prompt for a password if the server demands password authentication. However, \u003cspan class=\"application\"\u003edropdb\u003c/span\u003e will waste a connection attempt finding out that the server wants a password. In some cases it is worth typing \u003ccode class=\"option\"\u003e-W\u003c/code\u003e to avoid the extra connection attempt.\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--maintenance-db=\u003cem class=\"replaceable\"\u003e\u003ccode\u003edbname\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eSpecifies the name of the database to connect to in order to drop the target database. If not specified, the \u003ccode class=\"literal\"\u003epostgres\u003c/code\u003e database will be used; if that does not exist (or is the database being dropped), \u003ccode class=\"literal\"\u003etemplate1\u003c/code\u003e will be used. This can be a \u003ca class=\"link\" href=\"/docs/18/libpq-connect.html#LIBPQ-CONNSTRING\" title=\"32.1.1. Connection Strings\"\u003econnection string\u003c/a\u003e. If so, connection string parameters will override any conflicting command line options.\u003c/p\u003e\n\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003cdiv class=\"refsect1\" id=\"id-1.9.4.6.7\"\u003e\n\u003ch2\u003eEnvironment\u003c/h2\u003e\n\u003cdiv class=\"variablelist\"\u003e\n\u003cdl class=\"variablelist\"\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"envar\"\u003ePGHOST\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"envar\"\u003ePGPORT\u003c/code\u003e\u003cbr\u003e\u003c/span\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"envar\"\u003ePGUSER\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eDefault connection parameters\u003c/p\u003e\n\u003c/dd\u003e\n\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"envar\"\u003ePG_COLOR\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\n\u003cdd\u003e\n\u003cp\u003eSpecifies whether to use color in diagnostic messages. Possible values are \u003ccode class=\"literal\"\u003ealways\u003c/code\u003e, \u003ccode class=\"literal\"\u003eauto\u003c/code\u003e and \u003ccode class=\"literal\"\u003enever\u003c/code\u003e.\u003c/p\u003e\n\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003cp\u003eThis utility, like most other \u003cspan class=\"productname\"\u003ePostgreSQL\u003c/span\u003e utilities, also uses the environment variables supported by \u003cspan class=\"application\"\u003elibpq\u003c/span\u003e (see \u003ca class=\"xref\" href=\"/docs/18/libpq-envars.html\" title=\"32.15. Environment Variables\"\u003eSection 32.15\u003c/a\u003e).\u003c/p\u003e\n\u003c/div\u003e\n\u003cdiv class=\"refsect1\" id=\"id-1.9.4.6.8\"\u003e\n\u003ch2\u003eDiagnostics\u003c/h2\u003e\n\u003cp\u003eIn case of difficulty, see \u003ca class=\"xref\" href=\"/docs/18/sql-dropdatabase.html\" title=\"DROP DATABASE\"\u003e\u003cspan class=\"refentrytitle\"\u003eDROP DATABASE\u003c/span\u003e\u003c/a\u003e and \u003ca class=\"xref\" href=\"/docs/18/app-psql.html\" title=\"psql\"\u003e\u003cspan class=\"refentrytitle\"\u003e\u003cspan class=\"application\"\u003epsql\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e 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 \u003cspan class=\"application\"\u003elibpq\u003c/span\u003e front-end library will apply.\u003c/p\u003e\n\u003c/div\u003e\n\u003cdiv class=\"refsect1\" id=\"id-1.9.4.6.9\"\u003e\n\u003ch2\u003eExamples\u003c/h2\u003e\n\u003cp\u003eTo destroy the database \u003ccode class=\"literal\"\u003edemo\u003c/code\u003e on the default database server:\u003c/p\u003e\n\u003cpre class=\"screen\"\u003e\u003ccode class=\"prompt\"\u003e$ \u003c/code\u003e\u003cstrong class=\"userinput\"\u003e\u003ccode\u003edropdb demo\u003c/code\u003e\u003c/strong\u003e\n\u003c/pre\u003e\n\u003cp\u003eTo destroy the database \u003ccode class=\"literal\"\u003edemo\u003c/code\u003e using the server on host \u003ccode class=\"literal\"\u003eeden\u003c/code\u003e, port 5000, with verification and a peek at the underlying command:\u003c/p\u003e\n\u003cpre class=\"screen\"\u003e\u003ccode class=\"prompt\"\u003e$ \u003c/code\u003e\u003cstrong class=\"userinput\"\u003e\u003ccode\u003edropdb -p 5000 -h eden -i -e demo\u003c/code\u003e\u003c/strong\u003e\n\u003ccode class=\"computeroutput\"\u003eDatabase \"demo\" will be permanently deleted.\nAre you sure? (y/n) \u003c/code\u003e\u003cstrong class=\"userinput\"\u003e\u003ccode\u003ey\u003c/code\u003e\u003c/strong\u003e\n\u003ccode class=\"computeroutput\"\u003eDROP DATABASE demo;\u003c/code\u003e\n\u003c/pre\u003e\n\u003c/div\u003e\n\u003cdiv class=\"refsect1\" id=\"id-1.9.4.6.10\"\u003e\n\u003ch2\u003eSee Also\u003c/h2\u003e\u003cspan class=\"simplelist\"\u003e\u003ca class=\"xref\" href=\"/docs/18/app-createdb.html\" title=\"createdb\"\u003e\u003cspan class=\"refentrytitle\"\u003e\u003cspan class=\"application\"\u003ecreatedb\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e, \u003ca class=\"xref\" href=\"/docs/18/sql-dropdatabase.html\" title=\"DROP DATABASE\"\u003e\u003cspan class=\"refentrytitle\"\u003eDROP DATABASE\u003c/span\u003e\u003c/a\u003e\u003c/span\u003e\n\u003c/div\u003e\n\u003c/div\u003e\u003c/div\u003e","related":[],"sections":[],"tables":[{"columns":[{"key":"signature","label":"Option and arguments"},{"key":"summary","label":"Description"}],"key":"options","rows":[{"signature":{"text":"-e --echo","url":"/docs/18/app-dropdb.html"},"summary":"Echo the commands that dropdb generates and sends to the server."},{"signature":{"text":"-f --force","url":"/docs/18/app-dropdb.html"},"summary":"Attempt to terminate all existing connections to the target database before dropping it. See DROP DATABASE for more information on this option."},{"signature":{"text":"-i --interactive","url":"/docs/18/app-dropdb.html"},"summary":"Issues a verification prompt before doing anything destructive."},{"signature":{"text":"-V --version","url":"/docs/18/app-dropdb.html"},"summary":"Print the dropdb version and exit."},{"signature":{"text":"--if-exists","url":"/docs/18/app-dropdb.html"},"summary":"Do not throw an error if the database does not exist. A notice is issued in this case."},{"signature":{"text":"-? --help","url":"/docs/18/app-dropdb.html"},"summary":"Show help about dropdb command line arguments, and exit."},{"signature":{"text":"-h host --host= host","url":"/docs/18/app-dropdb.html"},"summary":"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."},{"signature":{"text":"-p port --port= port","url":"/docs/18/app-dropdb.html"},"summary":"Specifies the TCP port or local Unix domain socket file extension on which the server is listening for connections."},{"signature":{"text":"-U username --username= username","url":"/docs/18/app-dropdb.html"},"summary":"User name to connect as."},{"signature":{"text":"-w --no-password","url":"/docs/18/app-dropdb.html"},"summary":"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."},{"signature":{"text":"-W --password","url":"/docs/18/app-dropdb.html"},"summary":"Force dropdb to prompt for a password before connecting to a database."},{"signature":{"text":"--maintenance-db= dbname","url":"/docs/18/app-dropdb.html"},"summary":"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. This can be a connection string . If so, connection string parameters will override any conflicting command line options."}],"title":"Documented options"},{"columns":[{"key":"name","label":"Variable"},{"key":"description","label":"Meaning"}],"key":"environment","rows":[{"description":"Default connection parameters","name":"PGHOST PGPORT PGUSER"},{"description":"Specifies whether to use color in diagnostic messages. Possible values are always , auto and never .","name":"PG_COLOR"}],"title":"Environment variables"}]}},"RequestedLocale":"zh-Hans","Fallback":true,"Versions":["10","11","12","13","14","15","16","17","18","19","20"],"Locales":["en"],"Signatures":null,"Spellings":null,"SQLState":null,"Evidence":null}