Enum DataLossRisk 

pub enum DataLossRisk {
    None,
    Column,
    Table,
}

Whether reverting this migration on a populated DB destroys caller-visible rows / columns / data.

None = pure additive change (no DROP, no ALTER ... DROP, no destructive UPDATE). Safe to revert by un-bumping the schema-version row.

Column = drops a column or table; reverting means losing the data that lived there. Operators rolling back must export+import.

Table = drops an entire table or applies a destructive large-scale rewrite. Highest data-loss tier.

Variants

None

Column

Table

Trait Implementations

impl Clone for DataLossRisk

fn clone(&self) -> DataLossRisk

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DataLossRisk

impl Debug for DataLossRisk

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

Formats the value using the given formatter.

impl Eq for DataLossRisk

impl PartialEq for DataLossRisk

fn eq(&self, other: &DataLossRisk) -> 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 DataLossRisk