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View File Name : dblink_cancel_query.3

'\" t
.\"     Title: dblink_cancel_query
.\"    Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 2023
.\"    Manual: PostgreSQL 13.13 Documentation
.\"    Source: PostgreSQL 13.13
.\"  Language: English
.\"
.TH "DBLINK_CANCEL_QUERY" "3" "2023" "PostgreSQL 13.13" "PostgreSQL 13.13 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"
dblink_cancel_query \- cancels any active query on the named connection
.SH "SYNOPSIS"
.sp
.nf
dblink_cancel_query(text connname) returns text
.fi
.SH "DESCRIPTION"
.PP
\fBdblink_cancel_query\fR
attempts to cancel any query that is in progress on the named connection\&. Note that this is not certain to succeed (since, for example, the remote query might already have finished)\&. A cancel request simply improves the odds that the query will fail soon\&. You must still complete the normal query protocol, for example by calling
\fBdblink_get_result\fR\&.
.SH "ARGUMENTS"
.PP
\fIconnname\fR
.RS 4
Name of the connection to use\&.
.RE
.SH "RETURN VALUE"
.PP
Returns
OK
if the cancel request has been sent, or the text of an error message on failure\&.
.SH "EXAMPLES"
.sp
.if n \{\
.RS 4
.\}
.nf
SELECT dblink_cancel_query(\*(Aqdtest1\*(Aq);
.fi
.if n \{\
.RE
.\}