Struct PartialRowDelta 

pub struct PartialRowDelta {
    pub column_indices: Vec<usize>,
    pub old_values: Vec<SqlValue>,
    pub new_values: Vec<SqlValue>,
}

A partial row update containing only changed columns plus primary key columns

Used for efficient updates when only a subset of columns have changed. The column_indices field indicates which columns are present in values.

Fields

column_indices: Vec<usize>

Indices of columns that are included in this partial update (primary key columns + changed columns, sorted)

old_values: Vec<SqlValue>

Old values for the included columns

new_values: Vec<SqlValue>

New values for the included columns

Implementations

impl PartialRowDelta

pub fn from_rows( old_row: &Row, new_row: &Row, pk_columns: &[usize], ) -> Option<Self>

Create a new partial row delta from old and new rows

Arguments

• old_row - The previous row values
• new_row - The current row values
• pk_columns - Primary key column indices (always included)

Returns

• Some(PartialRowDelta) if the rows differ
• None if the rows are identical

Trait Implementations

impl Clone for PartialRowDelta

fn clone(&self) -> PartialRowDelta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PartialRowDelta

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

Formats the value using the given formatter.