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.\" Title: DROP TYPE
.\" 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 "DROP TYPE" "7" "2017-11-06" "PostgreSQL 9.2.24" "PostgreSQL 9.2.24 Documentation"
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.SH "NAME"
DROP_TYPE \- remove a data type
.\" DROP 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, operators)\&.
.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))
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