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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>dblink_is_busy</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="contrib-dblink-send-query.html" title="dblink_send_query" /><link rel="next" href="contrib-dblink-get-notify.html" title="dblink_get_notify" /></head><body><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">dblink_is_busy</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="contrib-dblink-send-query.html" title="dblink_send_query">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="dblink.html" title="F.10. dblink">Up</a></td><th width="60%" align="center">F.10. dblink</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 11.5 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="contrib-dblink-get-notify.html" title="dblink_get_notify">Next</a></td></tr></table><hr></hr></div><div class="refentry" id="CONTRIB-DBLINK-IS-BUSY"><div class="titlepage"></div><a id="id-1.11.7.19.16.1" class="indexterm"></a><div class="refnamediv"><h2><span class="refentrytitle">dblink_is_busy</span></h2><p>dblink_is_busy — checks if connection is busy with an async query</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">
dblink_is_busy(text connname) returns int
</pre></div><div class="refsect1" id="id-1.11.7.19.16.5"><h2>Description</h2><p>
<code class="function">dblink_is_busy</code> tests whether an async query is in progress.
</p></div><div class="refsect1" id="id-1.11.7.19.16.6"><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>connname</code></em></span></dt><dd><p>
Name of the connection to check.
</p></dd></dl></div></div><div class="refsect1" id="id-1.11.7.19.16.7"><h2>Return Value</h2><p>
Returns 1 if connection is busy, 0 if it is not busy.
If this function returns 0, it is guaranteed that
<code class="function">dblink_get_result</code> will not block.
</p></div><div class="refsect1" id="id-1.11.7.19.16.8"><h2>Examples</h2><pre class="programlisting">
SELECT dblink_is_busy('dtest1');
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