Function clock_timestamp 

pub fn clock_timestamp<'a, V>() -> SQLExpr<'a, V, Timestamptz, NonNull, Scalar, ()>
where
    V: SQLParam + 'a,
    V::DialectMarker: DialectSupports<PostgresDateTime>,

The actual wall-clock time (CLOCK_TIMESTAMP()), on PostgreSQL.

Unlike now and CURRENT_TIMESTAMP, the value changes during a transaction. The result is timestamptz and never NULL.

Examples

assert_eq!(clock_timestamp::<Value>().sql(), "CLOCK_TIMESTAMP()");