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>dblink_send_query</H1
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NAME="AEN147568"
></A
><H2
>Name</H2
>dblink_send_query&nbsp;--&nbsp;sends an async query to a remote database</DIV
><DIV
CLASS="REFSYNOPSISDIV"
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NAME="AEN147571"
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><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>dblink_send_query(text connname, text sql) returns int</PRE
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><H2
>Description</H2
><P
>    <CODE
CLASS="FUNCTION"
>dblink_send_query</CODE
> 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.
   </P
><P
>    After successfully dispatching an async query, completion status
    can be checked with <CODE
CLASS="FUNCTION"
>dblink_is_busy</CODE
>, and the results
    are ultimately collected with <CODE
CLASS="FUNCTION"
>dblink_get_result</CODE
>.
    It is also possible to attempt to cancel an active async query
    using <CODE
CLASS="FUNCTION"
>dblink_cancel_query</CODE
>.
   </P
></DIV
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><H2
>Arguments</H2
><P
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><DT
><TT
CLASS="PARAMETER"
>connname</TT
></DT
><DD
><P
>       Name of the connection to use.
      </P
></DD
><DT
><TT
CLASS="PARAMETER"
>sql</TT
></DT
><DD
><P
>       The SQL statement that you wish to execute in the remote database,
       for example <TT
CLASS="LITERAL"
>select * from pg_class</TT
>.
      </P
></DD
></DL
></DIV
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><A
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></A
><H2
>Return Value</H2
><P
>    Returns 1 if the query was successfully dispatched, 0 otherwise.
   </P
></DIV
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><A
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></A
><H2
>Examples</H2
><PRE
CLASS="PROGRAMLISTING"
>SELECT dblink_send_query('dtest1', 'SELECT * FROM foo WHERE f1 &lt; 3');</PRE
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