Enum SchemaChange 

pub enum SchemaChange {
    CreateTable(TableDef),
    DropTable(TableDef),
    AddColumn {
        table_name: String,
        column: ColumnDef,
    },
    DropColumn {
        table_name: String,
        column_name: String,
    },
}

A single schema change operation.

Variants

CreateTable(TableDef)

A new table needs to be created (includes all columns).

DropTable(TableDef)

An existing table needs to be dropped.

AddColumn

A new column needs to be added to an existing table.

Fields

table_name: String

column: ColumnDef

DropColumn

A column needs to be removed from an existing table.

Fields

table_name: String

column_name: String

Trait Implementations

impl Clone for SchemaChange

fn clone(&self) -> SchemaChange

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SchemaChange

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

Formats the value using the given formatter.

impl PartialEq for SchemaChange

fn eq(&self, other: &SchemaChange) -> 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 Eq for SchemaChange

impl StructuralPartialEq for SchemaChange