Struct SchemaDiff 

pub struct SchemaDiff {
    pub additions: Vec<ColumnChange>,
    pub widenings: Vec<ColumnChange>,
    pub incompatible: Vec<ColumnChange>,
    pub droppable_required: Vec<String>,
}

Result of diffing a page’s inferred shape against the destination schema.

Fields

additions: Vec<ColumnChange>

In the page, not in the destination.

widenings: Vec<ColumnChange>

Existing column whose type widened losslessly (e.g. integer→number, or gained nullability).

incompatible: Vec<ColumnChange>

Existing column whose type changed in a way that cannot be auto-applied (narrowing / incompatible type swap).

droppable_required: Vec<String>

In the destination and NOT NULL, absent from the page — would fail an insert unless relaxed to nullable.

Implementations

impl SchemaDiff

pub fn is_empty(&self) -> bool

true when no drift of any kind was detected.

pub fn changed_columns(&self) -> Vec<String>

Column names that drifted, for error messages / metrics.

Trait Implementations

impl Clone for SchemaDiff

fn clone(&self) -> SchemaDiff

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SchemaDiff

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

Formats the value using the given formatter.

impl Default for SchemaDiff

fn default() -> SchemaDiff

Returns the “default value” for a type.

impl PartialEq for SchemaDiff

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SchemaDiff