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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-13 13:44:03 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-13 13:44:03 +0000
commit293913568e6a7a86fd1479e1cff8e2ecb58d6568 (patch)
treefc3b469a3ec5ab71b36ea97cc7aaddb838423a0c /doc/src/sgml/man3/dblink_send_query.3
parentInitial commit. (diff)
downloadpostgresql-16-293913568e6a7a86fd1479e1cff8e2ecb58d6568.tar.xz
postgresql-16-293913568e6a7a86fd1479e1cff8e2ecb58d6568.zip
Adding upstream version 16.2.upstream/16.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+'\" t
+.\" Title: dblink_send_query
+.\" Author: The PostgreSQL Global Development Group
+.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
+.\" Date: 2024
+.\" Manual: PostgreSQL 16.2 Documentation
+.\" Source: PostgreSQL 16.2
+.\" Language: English
+.\"
+.TH "DBLINK_SEND_QUERY" "3" "2024" "PostgreSQL 16.2" "PostgreSQL 16.2 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_send_query \- sends an async query to a remote database
+.SH "SYNOPSIS"
+.sp
+.nf
+dblink_send_query(text connname, text sql) returns int
+.fi
+.SH "DESCRIPTION"
+.PP
+\fBdblink_send_query\fR
+sends a query to be executed asynchronously, that is, without immediately waiting for the result\&. There must not be an async query already in progress on the connection\&.
+.PP
+After successfully dispatching an async query, completion status can be checked with
+\fBdblink_is_busy\fR, and the results are ultimately collected with
+\fBdblink_get_result\fR\&. It is also possible to attempt to cancel an active async query using
+\fBdblink_cancel_query\fR\&.
+.SH "ARGUMENTS"
+.PP
+\fIconnname\fR
+.RS 4
+Name of the connection to use\&.
+.RE
+.PP
+\fIsql\fR
+.RS 4
+The SQL statement that you wish to execute in the remote database, for example
+select * from pg_class\&.
+.RE
+.SH "RETURN VALUE"
+.PP
+Returns 1 if the query was successfully dispatched, 0 otherwise\&.
+.SH "EXAMPLES"
+.sp
+.if n \{\
+.RS 4
+.\}
+.nf
+SELECT dblink_send_query(\*(Aqdtest1\*(Aq, \*(AqSELECT * FROM foo WHERE f1 < 3\*(Aq);
+.fi
+.if n \{\
+.RE
+.\}