{"Entry":{"collection":"tool","key":"dropdb","name":"dropdb","aliases":["dropdb"],"metadata":{"aliases":["dropdb"],"category":"Client applications","content_hash":"6e632f31c0cc278959e5b41cfbfba5d59e1490114204428f2642f4bbf9c0e99e","derived_content_hash":"4123e2182f51d88c2acbb127e7e6254e3462067946e44604a630bef78519addb","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"],"description_zh":"描述 dropdb 删除一个现有的 PostgreSQL 数据库。执行此命令的用户必须是数据库超级用户或该数据库的拥有者。 dropdb 是 SQL 命令 DROP DATABASE 的一个包装器。通过此工具删除数据库与通过其他访问服务器的方法删除数据库，在效果上没有区别。 选项 dropdb 接受下列命令行参数： dbname 指定要移除的数据库名称。 -e --echo 回显 dropdb 生成并发送给服务器的命令。 -f --force 在删除目标数据库之前，尝试终止所有到该数据库的现有连接。关于此选项的更多信息，见 DROP DATABASE 。 -i --interactive 在执行任何破坏性操作之前发出确认提示。 -V --version 打印 dropdb 版本并退出。 --if-exists 如果数据库不存在，则不要抛出错误。这种情况下会发出一个提示。 -? --help 显示有关 dropdb 命令行参数的帮助并退出。 dropdb 也接受下列用于连接参数的命令行参数： -h host --host= host 指定服务器所在机器的主机名。如果该值以斜杠开头，则它将被用作 Unix 域套接字的目录。 -p port --port= port 指定服务器监听连接所用的 TCP 端口或本地 Unix 域套接字文件扩展名。 -U username --username= username 指定用于连接的用户名。 -w --no-password 从不发出密码提示。如果服务器要求密码认证，而密码又无法通过诸如 .pgpass 文件等其他方式获得，则连接尝试将失败。该选项适合没有用户在场输入密码的批处理作业和脚本。 -W --password 强制 dropdb 在连接数据库之前提示输入密码。 这个选项并非必不可少，因为如果服务器要求密码认证， dropdb 会自动提示输入密码。不过， dropdb 会浪费一次连接尝试，才知道服务器需要密码。在某些情况下，为了避免这次额外的连接尝试，提前指定 -W 是值得的。 --maintenance-db= dbname ","description_zh_html":"\u003cp\u003e命令行工具 dropdb [ connection-option ...] [ option ...] dbname。\u003c/p\u003e\u003ch3\u003e同版本中文手册节选\u003c/h3\u003e\u003cdiv class=\"refsect1\"\u003e\u003ch2\u003e描述\u003c/h2\u003e\u003cp\u003e\n\u003cspan class=\"application\"\u003edropdb\u003c/span\u003e 删除一个现有的\n   \u003cspan class=\"productname\"\u003ePostgreSQL\u003c/span\u003e 数据库。执行此命令的用户必须是数据库超级用户或该数据库的拥有者。\n  \u003c/p\u003e\u003cp\u003e\n\u003cspan class=\"application\"\u003edropdb\u003c/span\u003e 是 \u003cacronym class=\"acronym\"\u003eSQL\u003c/acronym\u003e 命令\n   \u003ca class=\"link\" href=\"/zh/docs/18/sql-dropdatabase.html\"\u003e\u003ccode class=\"command\"\u003eDROP DATABASE\u003c/code\u003e\u003c/a\u003e 的一个包装器。通过此工具删除数据库与通过其他访问服务器的方法删除数据库，在效果上没有区别。\n  \u003c/p\u003e\u003c/div\u003e\u003cdiv class=\"refsect1\"\u003e\u003ch2\u003e选项\u003c/h2\u003e\u003cp\u003e\n\u003cspan class=\"application\"\u003edropdb\u003c/span\u003e 接受下列命令行参数：\n\n    \u003c/p\u003e\u003cdiv class=\"variablelist\"\u003e\u003cdl class=\"variablelist\"\u003e\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003cem class=\"replaceable\"\u003e\u003ccode\u003edbname\u003c/code\u003e\u003c/em\u003e\u003c/span\u003e\u003c/dt\u003e\u003cdd\u003e\u003cp\u003e\n        指定要移除的数据库名称。\n       \u003c/p\u003e\u003c/dd\u003e\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\u003cdd\u003e\u003cp\u003e\n        回显 \u003cspan class=\"application\"\u003edropdb\u003c/span\u003e 生成并发送给服务器的命令。\n       \u003c/p\u003e\u003c/dd\u003e\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\u003cdd\u003e\u003cp\u003e\n        在删除目标数据库之前，尝试终止所有到该数据库的现有连接。关于此选项的更多信息，见 \u003ca class=\"xref\" href=\"/zh/docs/18/sql-dropdatabase.html\"\u003e\u003cspan class=\"refentrytitle\"\u003eDROP DATABASE\u003c/span\u003e\u003c/a\u003e。\n       \u003c/p\u003e\u003c/dd\u003e\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\u003cdd\u003e\u003cp\u003e\n        在执行任何破坏性操作之前发出确认提示。\n       \u003c/p\u003e\u003c/dd\u003e\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\u003cdd\u003e\u003cp\u003e\n       打印 \u003cspan class=\"application\"\u003edropdb\u003c/span\u003e 版本并退出。\n       \u003c/p\u003e\u003c/dd\u003e\u003cdt\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"option\"\u003e--if-exists\u003c/code\u003e\u003c/span\u003e\u003c/dt\u003e\u003cdd\u003e\u003cp\u003e\n       如果数据库不存在，则不要抛出错误。这种情况下会发出一个提示。\n       \u003c/p\u003e\u003c/dd\u003e\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\u003cdd\u003e\u003cp\u003e\n       显示有关 \u003cspan class=\"application\"\u003edropdb\u003c/span\u003e 命令行参数的帮助并退出。\n       \u003c/p\u003e\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e\u003cp\u003e\n\u003c/p\u003e\u003cp\u003e\n\u003cspan class=\"application\"\u003edropdb\u003c/span\u003e 也接受下列用于连接参数的命令行参数：\n\n   \u003c/p\u003e\u003cdiv class=\"variablelist\"\u003e\u003cdl class=\"variablelist\"\u003e\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\u003cdd\u003e\u003cp\u003e\n        指定服务器所在机器的主机名。如果该值以斜杠开头，则它将被用作 Unix 域套接字的目录。\n       \u003c/p\u003e\u003c/dd\u003e\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\u003cdd\u003e\u003cp\u003e\n        指定服务器监听连接所用的 TCP 端口或本地 Unix 域套接字文件扩展名。\n       \u003c/p\u003e\u003c/dd\u003e\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\u003cdd\u003e\u003cp\u003e\n        指定用于连接的用户名。\n       \u003c/p\u003e\u003c/dd\u003e\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\u003cdd\u003e\u003cp\u003e\n        从不发出密码提示。如果服务器要求密码认证，而密码又无法通过诸如\n        \u003ccode class=\"filename\"\u003e.pgpass\u003c/code\u003e 文件等其他方式获得，则连接尝试将失败。该选项适合没有用户在场输入密码的批处理作业和脚本。\n       \u003c/p\u003e\u003c/dd\u003e\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\u003cdd\u003e\u003cp\u003e\n        强制 \u003cspan class=\"application\"\u003edropdb\u003c/span\u003e 在连接数据库之前提示输入密码。\n       \u003c/p\u003e\u003cp\u003e\n        这个选项并非必不可少，因为如果服务器要求密码认证，\u003cspan class=\"application\"\u003edropdb\u003c/span\u003e 会自动提示输入密码。不过，\u003cspan class=\"application\"\u003edropdb\u003c/span\u003e 会浪费一次连接尝试，才知道服务器需要密码。在某些情况下，为了避免这次额外的连接尝试，提前指定 \u003ccode class=\"option\"\u003e-W\u003c/code\u003e 是值得的。\n       \u003c/p\u003e\u003c/dd\u003e\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\u003cdd\u003e\u003cp\u003e\n         指定在删除目标数据库时要连接到的数据库名称。如果未指定，将使用\n         \u003ccode class=\"literal\"\u003epostgres\u003c/code\u003e 数据库；若该数据库不存在（或者它正是要被删除的数据库），则改用 \u003ccode class=\"literal\"\u003etemplate1\u003c/code\u003e。这也可以是一个\u003ca class=\"link\" href=\"/zh/docs/18/libpq-connect.html#LIBPQ-CONNSTRING\"\u003e连接字符串\u003c/a\u003e。如果是这种情况，其中的连接字符串参数将覆盖任何冲突的命令行选项。\n       \u003c/p\u003e\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e\u003cp\u003e\n\u003c/p\u003e\u003c/div\u003e\u003cp\u003e\u003ca href=\"/zh/docs/18/app-dropdb.html\"\u003e查看完整中文手册与上下文\u003c/a\u003e。\u003c/p\u003e","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"}],"facts_zh":[{"label":"手册中的可执行程序","value":"dropdb"},{"label":"程序版本","value":"18.6"},{"label":"参考清单","value":"客户端程序"},{"label":"选项定义组","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":[],"sections_zh":[],"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"}],"tables_zh":[{"columns":[{"key":"signature","label":"选项与参数"},{"key":"summary","label":"说明"}],"key":"options","rows":[{"signature":{"text":"-e --echo","url":"/docs/18/app-dropdb.html"},"summary":"回显 dropdb 生成并发送给服务器的命令。"},{"signature":{"text":"-f --force","url":"/docs/18/app-dropdb.html"},"summary":"在删除目标数据库之前，尝试终止所有到该数据库的现有连接。关于此选项的更多信息，见 DROP DATABASE 。"},{"signature":{"text":"-i --interactive","url":"/docs/18/app-dropdb.html"},"summary":"在执行任何破坏性操作之前发出确认提示。"},{"signature":{"text":"-V --version","url":"/docs/18/app-dropdb.html"},"summary":"打印 dropdb 版本并退出。"},{"signature":{"text":"--if-exists","url":"/docs/18/app-dropdb.html"},"summary":"如果数据库不存在，则不要抛出错误。这种情况下会发出一个提示。"},{"signature":{"text":"-? --help","url":"/docs/18/app-dropdb.html"},"summary":"显示有关 dropdb 命令行参数的帮助并退出。"},{"signature":{"text":"-h host --host= host","url":"/docs/18/app-dropdb.html"},"summary":"指定服务器所在机器的主机名。如果该值以斜杠开头，则它将被用作 Unix 域套接字的目录。"},{"signature":{"text":"-p port --port= port","url":"/docs/18/app-dropdb.html"},"summary":"指定服务器监听连接所用的 TCP 端口或本地 Unix 域套接字文件扩展名。"},{"signature":{"text":"-U username --username= username","url":"/docs/18/app-dropdb.html"},"summary":"指定用于连接的用户名。"},{"signature":{"text":"-w --no-password","url":"/docs/18/app-dropdb.html"},"summary":"从不发出密码提示。如果服务器要求密码认证，而密码又无法通过诸如 .pgpass 文件等其他方式获得，则连接尝试将失败。该选项适合没有用户在场输入密码的批处理作业和脚本。"},{"signature":{"text":"-W --password","url":"/docs/18/app-dropdb.html"},"summary":"强制 dropdb 在连接数据库之前提示输入密码。"},{"signature":{"text":"--maintenance-db= dbname","url":"/docs/18/app-dropdb.html"},"summary":"指定在删除目标数据库时要连接到的数据库名称。如果未指定，将使用 postgres 数据库；若该数据库不存在（或者它正是要被删除的数据库），则改用 template1 。这也可以是一个 连接字符串 。如果是这种情况，其中的连接字符串参数将覆盖任何冲突的命令行选项。"}],"title":"手册中的选项"},{"columns":[{"key":"name","label":"变量"},{"key":"description","label":"含义"}],"key":"environment","rows":[{"description":"默认连接参数","name":"PGHOST PGPORT PGUSER"},{"description":"指定诊断消息是否使用颜色。可选值为 always 、 auto 和 never 。","name":"PG_COLOR"}],"title":"环境变量"}],"zh_from":{"authored_translation":"source-derived-identity","body_sha256":"fe608860f6d8b99107ead1ef52ec72698c1518f7968073c88cb7caa3a528e72d","kind":"same-version-chinese-manual-with-source-derived-identity","manual":{"anchor":"","build_id":107,"extraction":"command-description-and-options","fragment_sha256":"e126d8a39fd23d2691d3c601a27bb5e776e1deaa777b7001026cc2af200203e3","locale":"zh-Hans","page_key":"app-dropdb.html","source_hash":"ef0fe289cbcde3f126dec473ecd00175b8ee854d24c0de46b514c3c8d333c298","source_revision":"unknown:rendered-translation-baseline","translated_from_revision":null,"translation_revision":"git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:08e987a66af27b98444a8057c256314eafa13611a3fb9e888214fc436824244b","url":"/zh/docs/18/app-dropdb.html","version":"18"},"runtime_rerun":false,"source_facts_revision":"ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8"}},"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":"en","Fallback":false,"Versions":["10","11","12","13","14","15","16","17","18","19","20"],"Locales":["en","zh-Hans"],"Signatures":null,"Spellings":null,"SQLState":null,"Evidence":null}