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'\" t .\" Title: ALTER EXTENSION .\" Author: The PostgreSQL Global Development Group .\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/> .\" Date: 2017-11-06 .\" Manual: PostgreSQL 9.2.24 Documentation .\" Source: PostgreSQL 9.2.24 .\" Language: English .\" .TH "ALTER EXTENSION" "7" "2017-11-06" "PostgreSQL 9.2.24" "PostgreSQL 9.2.24 Documentation" .\" ----------------------------------------------------------------- .\" * Define some portability stuff .\" ----------------------------------------------------------------- .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .\" http://bugs.debian.org/507673 .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" ----------------------------------------------------------------- .\" * set default formatting .\" ----------------------------------------------------------------- .\" disable hyphenation .nh .\" disable justification (adjust text to left margin only) .ad l .\" ----------------------------------------------------------------- .\" * MAIN CONTENT STARTS HERE * .\" ----------------------------------------------------------------- .SH "NAME" ALTER_EXTENSION \- change the definition of an extension .\" ALTER EXTENSION .SH "SYNOPSIS" .sp .nf ALTER EXTENSION \fIname\fR UPDATE [ TO \fInew_version\fR ] ALTER EXTENSION \fIname\fR SET SCHEMA \fInew_schema\fR ALTER EXTENSION \fIname\fR ADD \fImember_object\fR ALTER EXTENSION \fIname\fR DROP \fImember_object\fR where \fImember_object\fR is: AGGREGATE \fIagg_name\fR (\fIagg_type\fR [, \&.\&.\&.] ) | CAST (\fIsource_type\fR AS \fItarget_type\fR) | COLLATION \fIobject_name\fR | CONVERSION \fIobject_name\fR | DOMAIN \fIobject_name\fR | FOREIGN DATA WRAPPER \fIobject_name\fR | FOREIGN TABLE \fIobject_name\fR | FUNCTION \fIfunction_name\fR ( [ [ \fIargmode\fR ] [ \fIargname\fR ] \fIargtype\fR [, \&.\&.\&.] ] ) | OPERATOR \fIoperator_name\fR (\fIleft_type\fR, \fIright_type\fR) | OPERATOR CLASS \fIobject_name\fR USING \fIindex_method\fR | OPERATOR FAMILY \fIobject_name\fR USING \fIindex_method\fR | [ PROCEDURAL ] LANGUAGE \fIobject_name\fR | SCHEMA \fIobject_name\fR | SEQUENCE \fIobject_name\fR | SERVER \fIobject_name\fR | TABLE \fIobject_name\fR | TEXT SEARCH CONFIGURATION \fIobject_name\fR | TEXT SEARCH DICTIONARY \fIobject_name\fR | TEXT SEARCH PARSER \fIobject_name\fR | TEXT SEARCH TEMPLATE \fIobject_name\fR | TYPE \fIobject_name\fR | VIEW \fIobject_name\fR .fi .SH "DESCRIPTION" .PP \fBALTER EXTENSION\fR changes the definition of an installed extension\&. There are several subforms: .PP UPDATE .RS 4 This form updates the extension to a newer version\&. The extension must supply a suitable update script (or series of scripts) that can modify the currently\-installed version into the requested version\&. .RE .PP SET SCHEMA .RS 4 This form moves the extension\*(Aqs objects into another schema\&. The extension has to be relocatable for this command to succeed\&. .RE .PP ADD \fImember_object\fR .RS 4 This form adds an existing object to the extension\&. This is mainly useful in extension update scripts\&. The object will subsequently be treated as a member of the extension; notably, it can only be dropped by dropping the extension\&. .RE .PP DROP \fImember_object\fR .RS 4 This form removes a member object from the extension\&. This is mainly useful in extension update scripts\&. The object is not dropped, only disassociated from the extension\&. .RE See Section 35.15, \(lqPackaging Related Objects into an Extension\(rq, in the documentation for more information about these operations\&. .PP You must own the extension to use \fBALTER EXTENSION\fR\&. The ADD/DROP forms require ownership of the added/dropped object as well\&. .SH "PARAMETERS" .PP .PP \fIname\fR .RS 4 The name of an installed extension\&. .RE .PP \fInew_version\fR .RS 4 The desired new version of the extension\&. This can be written as either an identifier or a string literal\&. If not specified, \fBALTER EXTENSION UPDATE\fR attempts to update to whatever is shown as the default version in the extension\*(Aqs control file\&. .RE .PP \fInew_schema\fR .RS 4 The new schema for the extension\&. .RE .PP \fIobject_name\fR, \fIagg_name\fR, \fIfunction_name\fR, \fIoperator_name\fR .RS 4 The name of an object to be added to or removed from the extension\&. Names of tables, aggregates, domains, foreign tables, functions, operators, operator classes, operator families, sequences, text search objects, types, and views can be schema\-qualified\&. .RE .PP \fIagg_type\fR .RS 4 An input data type on which the aggregate function operates\&. To reference a zero\-argument aggregate function, write * in place of the list of input data types\&. .RE .PP \fIsource_type\fR .RS 4 The name of the source data type of the cast\&. .RE .PP \fItarget_type\fR .RS 4 The name of the target data type of the cast\&. .RE .PP \fIargmode\fR .RS 4 The mode of a function argument: IN, OUT, INOUT, or VARIADIC\&. If omitted, the default is IN\&. Note that \fBALTER EXTENSION\fR does not actually pay any attention to OUT arguments, since only the input arguments are needed to determine the function\*(Aqs identity\&. So it is sufficient to list the IN, INOUT, and VARIADIC arguments\&. .RE .PP \fIargname\fR .RS 4 The name of a function argument\&. Note that \fBALTER EXTENSION\fR does not actually pay any attention to argument names, since only the argument data types are needed to determine the function\*(Aqs identity\&. .RE .PP \fIargtype\fR .RS 4 The data type(s) of the function\*(Aqs arguments (optionally schema\-qualified), if any\&. .RE .PP \fIleft_type\fR, \fIright_type\fR .RS 4 The data type(s) of the operator\*(Aqs arguments (optionally schema\-qualified)\&. Write NONE for the missing argument of a prefix or postfix operator\&. .RE .PP PROCEDURAL .RS 4 This is a noise word\&. .RE .SH "EXAMPLES" .PP To update the hstore extension to version 2\&.0: .sp .if n \{\ .RS 4 .\} .nf ALTER EXTENSION hstore UPDATE TO \*(Aq2\&.0\*(Aq; .fi .if n \{\ .RE .\} .PP To change the schema of the hstore extension to utils: .sp .if n \{\ .RS 4 .\} .nf ALTER EXTENSION hstore SET SCHEMA utils; .fi .if n \{\ .RE .\} .PP To add an existing function to the hstore extension: .sp .if n \{\ .RS 4 .\} .nf ALTER EXTENSION hstore ADD FUNCTION populate_record(anyelement, hstore); .fi .if n \{\ .RE .\} .SH "COMPATIBILITY" .PP \fBALTER EXTENSION\fR is a PostgreSQL extension\&. .SH "SEE ALSO" CREATE EXTENSION (\fBCREATE_EXTENSION\fR(7)), DROP EXTENSION (\fBDROP_EXTENSION\fR(7))