<title>Return Value</title>

<para>

Returns last error message, oran empty string if there has been

Returns last error message, or<literal>OK</literal> if there has been

no error in this connection.

</para>

</refsect1>

<refsect1>

<title>Notes</title>

<para>

When asynchronous queries are initiated by

<function>dblink_send_query</function>, the error message associated with

the connection might not get updated until the server's response message

is consumed. This typically means that <function>dblink_is_busy</function>

or <function>dblink_get_result</function> should be called prior to

<function>dblink_error_message</function>, so that any error generated by

the asynchronous query will be visible.

</para>

</refsect1>

<refsect1>

<title>Examples</title>