dblink_send_query

Description

dblink_send_query 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.

After successfully dispatching an async query, completion status can be checked with dblink_is_busy, and the results are ultimately collected with dblink_get_result. It is also possible to attempt to cancel an active async query using dblink_cancel_query.

Arguments

Return Value

Returns 1 if the query was successfully dispatched, 0 otherwise.

Example

    SELECT dblink_send_query('dtest1', 'SELECT * FROM foo WHERE f1 < 3');