Struct SchemaDiff 

pub struct SchemaDiff {
    pub operations: Vec<Operation>,
    pub ambiguous: Vec<AmbiguousChange>,
    pub warnings: Vec<DiffWarning>,
}

Result of comparing two schema snapshots.

Fields

operations: Vec<Operation>

The migration operations to apply.

ambiguous: Vec<AmbiguousChange>

Changes that may be renames and need user confirmation.

warnings: Vec<DiffWarning>

Informational warnings (destructive changes that require manual intervention, column order changes, etc.).

Implementations

impl SchemaDiff

pub fn is_empty(&self) -> bool

Returns true if there are no changes at all (no ops, no ambiguous changes, and no warnings).

pub fn to_sql(&self, dialect: &impl MigrationDialect) -> Vec<String>

Convenience: generates SQL for every operation using the given dialect.

pub fn reverse(&self) -> Option<Self>

Attempts to reverse the entire diff. Returns None if any operation is non-reversible.

pub fn is_reversible(&self) -> bool

Returns true if every operation is reversible.

pub fn non_reversible_operations(&self) -> Vec<&Operation>

Returns references to the non-reversible operations.

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 PartialEq for SchemaDiff

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for SchemaDiff