Enum MigrationRisk 

pub enum MigrationRisk {
    None,
    MayFail,
    ExistingNullsMustBeAbsent,
    DataWillBeModified,
    ManualActionRequired,
}

Risk category associated with a migration step.

Variants

None

MayFail

Cast may fail for incompatible values (e.g. TEXT → INTEGER).

ExistingNullsMustBeAbsent

SET NOT NULL will fail if any existing row has NULL in this column.

DataWillBeModified

Existing NULL rows will be overwritten with the column default.

ManualActionRequired

Cannot be automated — requires a manual database action.

Trait Implementations

impl Clone for MigrationRisk

fn clone(&self) -> MigrationRisk

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MigrationRisk

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MigrationRisk

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for MigrationRisk

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.