blob: 94b140b3e05d541918812e0729473ab2e2ac311e (
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
|
'\" t
.\" Title: DROP TYPE
.\" 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 "DROP TYPE" "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"
DROP_TYPE \- remove a data type
.SH "SYNOPSIS"
.sp
.nf
DROP TYPE [ IF EXISTS ] \fIname\fR [, \&.\&.\&.] [ CASCADE | RESTRICT ]
.fi
.SH "DESCRIPTION"
.PP
\fBDROP TYPE\fR
removes a user\-defined data type\&. Only the owner of a type can remove it\&.
.SH "PARAMETERS"
.PP
IF EXISTS
.RS 4
Do not throw an error if the type does not exist\&. A notice is issued in this case\&.
.RE
.PP
\fIname\fR
.RS 4
The name (optionally schema\-qualified) of the data type to remove\&.
.RE
.PP
CASCADE
.RS 4
Automatically drop objects that depend on the type (such as table columns, functions, and operators), and in turn all objects that depend on those objects (see
Section\ \&5.14)\&.
.RE
.PP
RESTRICT
.RS 4
Refuse to drop the type if any objects depend on it\&. This is the default\&.
.RE
.SH "EXAMPLES"
.PP
To remove the data type
box:
.sp
.if n \{\
.RS 4
.\}
.nf
DROP TYPE box;
.fi
.if n \{\
.RE
.\}
.SH "COMPATIBILITY"
.PP
This command is similar to the corresponding command in the SQL standard, apart from the
IF EXISTS
option, which is a
PostgreSQL
extension\&. But note that much of the
\fBCREATE TYPE\fR
command and the data type extension mechanisms in
PostgreSQL
differ from the SQL standard\&.
.SH "SEE ALSO"
ALTER TYPE (\fBALTER_TYPE\fR(7)), CREATE TYPE (\fBCREATE_TYPE\fR(7))
|
