Struct SchemaDiff 

pub struct SchemaDiff {
    pub added: Vec<Field>,
    pub dropped: Vec<String>,
    pub changed: Vec<TypeChange>,
    pub nullable: Vec<String>,
}

The schema delta between a module’s declared fields and its migrated columns.

Fields

added: Vec<Field>

Declared fields with no column yet — safe, additive ADD COLUMN.

dropped: Vec<String>

Columns present in the migrations but no longer declared — potential drops (or the old half of a rename). Reported; only emitted under --force.

changed: Vec<TypeChange>

Differences from generator defaults; preserve existing SQL and report warnings.

nullable: Vec<String>

Non-optional model fields whose SQL columns still allow NULL (backfill pending).

Implementations

impl SchemaDiff

pub fn is_empty(&self) -> bool

No column additions, removals or type changes. Callers must also inspect nullable for pending backfill/NOT NULL work.

Trait Implementations

impl Debug for SchemaDiff

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

Formats the value using the given formatter.

impl Default for SchemaDiff

fn default() -> Self

Returns the “default value” for a type.

impl Eq for SchemaDiff

impl PartialEq for SchemaDiff

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SchemaDiff