/*
* call-seq:
* conn.async_query(sql)
*
* Sends an asynchronous SQL query request specified by _sql_ to the PostgreSQL.
* Returns an Array as the resulting tuple on success.
* On failure, it returns +nil+, and the error details can be obtained by #error.
*/
static VALUE
pgconn_async_query(obj, str)
VALUE obj, str;
{
return pgresult_result_with_clear(pgconn_async_exec(obj, str));
}