'\" t .\" Title: ALTER STATISTICS .\" Author: The PostgreSQL Global Development Group .\" Generator: DocBook XSL Stylesheets vsnapshot .\" Date: 2024 .\" Manual: PostgreSQL 16.3 Documentation .\" Source: PostgreSQL 16.3 .\" Language: English .\" .TH "ALTER STATISTICS" "7" "2024" "PostgreSQL 16.3" "PostgreSQL 16.3 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_STATISTICS \- change the definition of an extended statistics object .SH "SYNOPSIS" .sp .nf ALTER STATISTICS \fIname\fR OWNER TO { \fInew_owner\fR | CURRENT_ROLE | CURRENT_USER | SESSION_USER } ALTER STATISTICS \fIname\fR RENAME TO \fInew_name\fR ALTER STATISTICS \fIname\fR SET SCHEMA \fInew_schema\fR ALTER STATISTICS \fIname\fR SET STATISTICS \fInew_target\fR .fi .SH "DESCRIPTION" .PP \fBALTER STATISTICS\fR changes the parameters of an existing extended statistics object\&. Any parameters not specifically set in the \fBALTER STATISTICS\fR command retain their prior settings\&. .PP You must own the statistics object to use \fBALTER STATISTICS\fR\&. To change a statistics object\*(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 statistics object\*(Aqs schema\&. (These restrictions enforce that altering the owner doesn\*(Aqt do anything you couldn\*(Aqt do by dropping and recreating the statistics object\&. However, a superuser can alter ownership of any statistics object anyway\&.) .SH "PARAMETERS" .PP .PP \fIname\fR .RS 4 The name (optionally schema\-qualified) of the statistics object to be altered\&. .RE .PP \fInew_owner\fR .RS 4 The user name of the new owner of the statistics object\&. .RE .PP \fInew_name\fR .RS 4 The new name for the statistics object\&. .RE .PP \fInew_schema\fR .RS 4 The new schema for the statistics object\&. .RE .PP \fInew_target\fR .RS 4 The statistic\-gathering target for this statistics object for subsequent \fBANALYZE\fR operations\&. The target can be set in the range 0 to 10000; alternatively, set it to \-1 to revert to using the maximum of the statistics target of the referenced columns, if set, or the system default statistics target (default_statistics_target)\&. For more information on the use of statistics by the PostgreSQL query planner, refer to Section\ \&14.2\&. .RE .SH "COMPATIBILITY" .PP There is no \fBALTER STATISTICS\fR command in the SQL standard\&. .SH "SEE ALSO" CREATE STATISTICS (\fBCREATE_STATISTICS\fR(7)), DROP STATISTICS (\fBDROP_STATISTICS\fR(7))