blob: c88a7f5a5412ba7f357f4fdc746cb8ff5f4b2033 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
'\" t
.\" Title: ALTER STATISTICS
.\" Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\" Date: 2023
.\" Manual: PostgreSQL 15.5 Documentation
.\" Source: PostgreSQL 15.5
.\" Language: English
.\"
.TH "ALTER STATISTICS" "7" "2023" "PostgreSQL 15.5" "PostgreSQL 15.5 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 also be a direct or indirect member of 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))
|
