pub enum CountOption {
None,
Exact,
Planned,
Estimated,
}Expand description
Count mode for responses.
Variants§
None
No count requested.
Exact
Exact count via COUNT(*).
Planned
Planned count from query planner (fast, approximate).
Estimated
Estimated count using statistics (fast, approximate).
Trait Implementations§
Source§impl Clone for CountOption
impl Clone for CountOption
Source§fn clone(&self) -> CountOption
fn clone(&self) -> CountOption
Returns a duplicate of the value. Read more
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source. Read moreSource§impl Debug for CountOption
impl Debug for CountOption
Source§impl PartialEq for CountOption
impl PartialEq for CountOption
impl Copy for CountOption
impl Eq for CountOption
impl StructuralPartialEq for CountOption
Auto Trait Implementations§
impl Freeze for CountOption
impl RefUnwindSafe for CountOption
impl Send for CountOption
impl Sync for CountOption
impl Unpin for CountOption
impl UnwindSafe for CountOption
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key and return true if they are equal.