1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22

/**
 * [Retrieving Query Results Row-by-Row](https://www.postgresql.org/docs/current/libpq-single-row-mode.html)
 */
impl Connection {
    /**
     * Select single-row mode for the currently-executing query.
     *
     * See
     * [PQsetSingleRowMode](https://www.postgresql.org/docs/current/libpq-single-row-mode.html#LIBPQ-PQSETSINGLEROWMODE).
     */
    pub fn set_single_row_mode(&self) -> std::result::Result<(), ()> {
        log::debug!("Set single row mode");

        let success = unsafe { pq_sys::PQsetSingleRowMode(self.into()) };

        if success == 1 {
            Ok(())
        } else {
            Err(())
        }
    }
}