'\" t
.\"     Title: DROP OPERATOR
.\"    Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: 2019
.\"    Manual: PostgreSQL 9.6.12 Documentation
.\"    Source: PostgreSQL 9.6.12
.\"  Language: English
.\"
.TH "DROP OPERATOR" "7" "2019" "PostgreSQL 9.6.12" "PostgreSQL 9.6.12 Documentation"
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.SH "NAME"
DROP_OPERATOR \- remove an operator
.SH "SYNOPSIS"
.sp
.nf
DROP OPERATOR [ IF EXISTS ] \fIname\fR ( { \fIleft_type\fR | NONE } , { \fIright_type\fR | NONE } ) [ CASCADE | RESTRICT ]
.fi
.SH "DESCRIPTION"
.PP
\fBDROP OPERATOR\fR
drops an existing operator from the database system\&. To execute this command you must be the owner of the operator\&.
.SH "PARAMETERS"
.PP
IF EXISTS
.RS 4
Do not throw an error if the operator does not exist\&. A notice is issued in this case\&.
.RE
.PP
\fIname\fR
.RS 4
The name (optionally schema\-qualified) of an existing operator\&.
.RE
.PP
\fIleft_type\fR
.RS 4
The data type of the operator\*(Aqs left operand; write
NONE
if the operator has no left operand\&.
.RE
.PP
\fIright_type\fR
.RS 4
The data type of the operator\*(Aqs right operand; write
NONE
if the operator has no right operand\&.
.RE
.PP
CASCADE
.RS 4
Automatically drop objects that depend on the operator (such as views using it), and in turn all objects that depend on those objects (see
Section 5.13, \(lqDependency Tracking\(rq, in the documentation)\&.
.RE
.PP
RESTRICT
.RS 4
Refuse to drop the operator if any objects depend on it\&. This is the default\&.
.RE
.SH "EXAMPLES"
.PP
Remove the power operator
a^b
for type
integer:
.sp
.if n \{\
.RS 4
.\}
.nf
DROP OPERATOR ^ (integer, integer);
.fi
.if n \{\
.RE
.\}
.PP
Remove the left unary bitwise complement operator
~b
for type
bit:
.sp
.if n \{\
.RS 4
.\}
.nf
DROP OPERATOR ~ (none, bit);
.fi
.if n \{\
.RE
.\}
.PP
Remove the right unary factorial operator
x!
for type
bigint:
.sp
.if n \{\
.RS 4
.\}
.nf
DROP OPERATOR ! (bigint, none);
.fi
.if n \{\
.RE
.\}
.SH "COMPATIBILITY"
.PP
There is no
\fBDROP OPERATOR\fR
statement in the SQL standard\&.
.SH "SEE ALSO"
CREATE OPERATOR (\fBCREATE_OPERATOR\fR(7)), ALTER OPERATOR (\fBALTER_OPERATOR\fR(7))