Enum ChangeOp 

pub enum ChangeOp {
    Insert,
    Delete,
    UpdateDelete,
    UpdateInsert,
}

Row-level operation for SQL streams that can revise prior output.

Variants

Insert

Adds a row that was not previously present.

Delete

Retracts a row without a replacement.

UpdateDelete

First half of an adjacent update pair, carrying the old row.

UpdateInsert

Second half of an adjacent update pair, carrying the new row.

Implementations

impl ChangeOp

pub const fn is_positive(self) -> bool

Returns true for rows that add state to an updating stream.

pub const fn is_retraction(self) -> bool

Returns true for rows that retract state from an updating stream.

Trait Implementations

impl Clone for ChangeOp

fn clone(&self) -> ChangeOp

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for ChangeOp

impl Debug for ChangeOp

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for ChangeOp

impl PartialEq for ChangeOp

fn eq(&self, other: &ChangeOp) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ChangeOp