'\" t
.\"     Title: DROP ROUTINE
.\"    Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 2023
.\"    Manual: PostgreSQL 11.22 Documentation
.\"    Source: PostgreSQL 11.22
.\"  Language: English
.\"
.TH "DROP ROUTINE" "7" "2023" "PostgreSQL 11.22" "PostgreSQL 11.22 Documentation"
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.SH "NAME"
DROP_ROUTINE \- remove a routine
.SH "SYNOPSIS"
.sp
.nf
DROP ROUTINE [ IF EXISTS ] \fIname\fR [ ( [ [ \fIargmode\fR ] [ \fIargname\fR ] \fIargtype\fR [, \&.\&.\&.] ] ) ] [, \&.\&.\&.]
    [ CASCADE | RESTRICT ]
.fi
.SH "DESCRIPTION"
.PP
\fBDROP ROUTINE\fR
removes the definition of an existing routine, which can be an aggregate function, a normal function, or a procedure\&. See under
DROP AGGREGATE (\fBDROP_AGGREGATE\fR(7)),
DROP FUNCTION (\fBDROP_FUNCTION\fR(7)), and
DROP PROCEDURE (\fBDROP_PROCEDURE\fR(7))
for the description of the parameters, more examples, and further details\&.
.SH "EXAMPLES"
.PP
To drop the routine
foo
for type
integer:
.sp
.if n \{\
.RS 4
.\}
.nf
DROP ROUTINE foo(integer);
.fi
.if n \{\
.RE
.\}
.sp
This command will work independent of whether
foo
is an aggregate, function, or procedure\&.
.SH "COMPATIBILITY"
.PP
This command conforms to the SQL standard, with these
PostgreSQL
extensions:
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
The standard only allows one routine to be dropped per command\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
The
IF EXISTS
option
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
The ability to specify argument modes and names
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Aggregate functions are an extension\&.
.RE
.sp
.SH "SEE ALSO"
DROP AGGREGATE (\fBDROP_AGGREGATE\fR(7)), DROP FUNCTION (\fBDROP_FUNCTION\fR(7)), DROP PROCEDURE (\fBDROP_PROCEDURE\fR(7)), ALTER ROUTINE (\fBALTER_ROUTINE\fR(7))
.PP
Note that there is no
CREATE ROUTINE
command\&.