droplang.1

PostgreSQL 8.2中增加了很多企业用户所需要的功能和性能上的提高,其开发团队说,该版本将加速更多企业向该数据库移植.核心开发成员之一Bruce Momjian表示,在新版PostgreSQL

.\\" auto-generated by docbook2man-spec $Revision: 1.1.1.1 $
.TH "DROPLANG" "1" "2008-01-03" "Application" "PostgreSQL Client Applications"
.SH NAME
droplang \- remove a PostgreSQL procedural language

.SH SYNOPSIS
.sp
\fBdroplang\fR [ \fB\fIconnection-option\fB\fR\fI...\fR ]  \fB\fIlangname\fB\fR [ \fB\fIdbname\fB\fR ] 

\fBdroplang\fR [ \fB\fIconnection-option\fB\fR\fI...\fR ]  \fB [ --list ]  [ -l ] \fR \fB\fIdbname\fB\fR
.SH "DESCRIPTION"
.PP
\fBdroplang\fR is a utility for removing an 
existing programming language from a
PostgreSQL database.
\fBdroplang\fR can drop any procedural language,
even those not supplied by the PostgreSQL distribution.
.PP
Although backend programming languages can be removed directly using
several SQL commands, it is recommended to use
\fBdroplang\fR because it performs a number
of checks and is much easier to use. See
DROP LANGUAGE [\fBdrop_language\fR(7)]
for more.
.SH "OPTIONS"
.PP
\fBdroplang\fR accepts the following command line arguments:
.TP
\fB\fIlangname\fB\fR
Specifies the name of the backend programming language to be removed.
.TP
\fB[-d] \fIdbname\fB\fR
.TP
\fB[--dbname] \fIdbname\fB\fR
Specifies from which database the language should be removed.
The default is to use the database with the same name as the
current system user.
.TP
\fB-e\fR
.TP
\fB--echo\fR
Display SQL commands as they are executed.
.TP
\fB-l\fR
.TP
\fB--list\fR
Show a list of already installed languages in the target database.
.PP
.PP
\fBdroplang\fR also accepts 
the following command line arguments for connection parameters:
.TP
\fB-h \fIhost\fB\fR
.TP
\fB--host \fIhost\fB\fR
Specifies the host name of the machine on which the 
server
is running. If host begins with a slash, it is used 
as the directory for the Unix domain socket.
.TP
\fB-p \fIport\fB\fR
.TP
\fB--port \fIport\fB\fR
Specifies the Internet TCP/IP port or local Unix domain socket file 
extension on which the server
is listening for connections.
.TP
\fB-U \fIusername\fB\fR
.TP
\fB--username \fIusername\fB\fR
User name to connect as
.TP
\fB-W\fR
.TP
\fB--password\fR
Force password prompt.
.PP
.SH "ENVIRONMENT"
.TP
\fBPGDATABASE\fR
.TP
\fBPGHOST\fR
.TP
\fBPGPORT\fR
.TP
\fBPGUSER\fR
Default connection parameters
.PP
This utility, like most other PostgreSQL utilities,
also uses the environment variables supported by \fBlibpq\fR
(see in the documentation).
.PP
.SH "DIAGNOSTICS"
.PP
Most error messages are self-explanatory. If not, run
\fBdroplang\fR with the \fB--echo\fR
option and see under the respective SQL command
for details. Also, any default connection settings and environment
variables used by the \fBlibpq\fR front-end
library will apply.
.SH "NOTES"
.PP
Use \fBcreatelang\fR(1) to add a language.
.SH "EXAMPLES"
.PP
To remove the language pltcl:
.sp
.nf
$ \fBdroplang pltcl dbname\fR
.sp
.fi
.SH "SEE ALSO"
\fBcreatelang\fR(1), DROP LANGUAGE [\fBdrop_language\fR(7)]