'\" t
.\"     Title: ALTER MATERIALIZED VIEW
.\"    Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 2024
.\"    Manual: PostgreSQL 16.3 Documentation
.\"    Source: PostgreSQL 16.3
.\"  Language: English
.\"
.TH "ALTER MATERIALIZED VIEW" "7" "2024" "PostgreSQL 16.3" "PostgreSQL 16.3 Documentation"
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.SH "NAME"
ALTER_MATERIALIZED_VIEW \- change the definition of a materialized view
.SH "SYNOPSIS"
.sp
.nf
ALTER MATERIALIZED VIEW [ IF EXISTS ] \fIname\fR
    \fIaction\fR [, \&.\&.\&. ]
ALTER MATERIALIZED VIEW \fIname\fR
    [ NO ] DEPENDS ON EXTENSION \fIextension_name\fR
ALTER MATERIALIZED VIEW [ IF EXISTS ] \fIname\fR
    RENAME [ COLUMN ] \fIcolumn_name\fR TO \fInew_column_name\fR
ALTER MATERIALIZED VIEW [ IF EXISTS ] \fIname\fR
    RENAME TO \fInew_name\fR
ALTER MATERIALIZED VIEW [ IF EXISTS ] \fIname\fR
    SET SCHEMA \fInew_schema\fR
ALTER MATERIALIZED VIEW ALL IN TABLESPACE \fIname\fR [ OWNED BY \fIrole_name\fR [, \&.\&.\&. ] ]
    SET TABLESPACE \fInew_tablespace\fR [ NOWAIT ]

where \fIaction\fR is one of:

    ALTER [ COLUMN ] \fIcolumn_name\fR SET STATISTICS \fIinteger\fR
    ALTER [ COLUMN ] \fIcolumn_name\fR SET ( \fIattribute_option\fR = \fIvalue\fR [, \&.\&.\&. ] )
    ALTER [ COLUMN ] \fIcolumn_name\fR RESET ( \fIattribute_option\fR [, \&.\&.\&. ] )
    ALTER [ COLUMN ] \fIcolumn_name\fR SET STORAGE { PLAIN | EXTERNAL | EXTENDED | MAIN | DEFAULT }
    ALTER [ COLUMN ] \fIcolumn_name\fR SET COMPRESSION \fIcompression_method\fR
    CLUSTER ON \fIindex_name\fR
    SET WITHOUT CLUSTER
    SET ACCESS METHOD \fInew_access_method\fR
    SET TABLESPACE \fInew_tablespace\fR
    SET ( \fIstorage_parameter\fR [= \fIvalue\fR] [, \&.\&.\&. ] )
    RESET ( \fIstorage_parameter\fR [, \&.\&.\&. ] )
    OWNER TO { \fInew_owner\fR | CURRENT_ROLE | CURRENT_USER | SESSION_USER }
.fi
.SH "DESCRIPTION"
.PP
\fBALTER MATERIALIZED VIEW\fR
changes various auxiliary properties of an existing materialized view\&.
.PP
You must own the materialized view to use
\fBALTER MATERIALIZED VIEW\fR\&. To change a materialized view\*(Aqs schema, you must also have
CREATE
privilege on the new schema\&. To alter the owner, you must be able to
SET ROLE
to the new owning role, and that role must have
CREATE
privilege on the materialized view\*(Aqs schema\&. (These restrictions enforce that altering the owner doesn\*(Aqt do anything you couldn\*(Aqt do by dropping and recreating the materialized view\&. However, a superuser can alter ownership of any view anyway\&.)
.PP
The statement subforms and actions available for
\fBALTER MATERIALIZED VIEW\fR
are a subset of those available for
\fBALTER TABLE\fR, and have the same meaning when used for materialized views\&. See the descriptions for
\fBALTER TABLE\fR
for details\&.
.SH "PARAMETERS"
.PP
\fIname\fR
.RS 4
The name (optionally schema\-qualified) of an existing materialized view\&.
.RE
.PP
\fIcolumn_name\fR
.RS 4
Name of a new or existing column\&.
.RE
.PP
\fIextension_name\fR
.RS 4
The name of the extension that the materialized view is to depend on (or no longer dependent on, if
NO
is specified)\&. A materialized view that\*(Aqs marked as dependent on an extension is automatically dropped when the extension is dropped\&.
.RE
.PP
\fInew_column_name\fR
.RS 4
New name for an existing column\&.
.RE
.PP
\fInew_owner\fR
.RS 4
The user name of the new owner of the materialized view\&.
.RE
.PP
\fInew_name\fR
.RS 4
The new name for the materialized view\&.
.RE
.PP
\fInew_schema\fR
.RS 4
The new schema for the materialized view\&.
.RE
.SH "EXAMPLES"
.PP
To rename the materialized view
foo
to
bar:
.sp
.if n \{\
.RS 4
.\}
.nf
ALTER MATERIALIZED VIEW foo RENAME TO bar;
.fi
.if n \{\
.RE
.\}
.SH "COMPATIBILITY"
.PP
\fBALTER MATERIALIZED VIEW\fR
is a
PostgreSQL
extension\&.
.SH "SEE ALSO"
CREATE MATERIALIZED VIEW (\fBCREATE_MATERIALIZED_VIEW\fR(7)), DROP MATERIALIZED VIEW (\fBDROP_MATERIALIZED_VIEW\fR(7)), REFRESH MATERIALIZED VIEW (\fBREFRESH_MATERIALIZED_VIEW\fR(7))