Struct ColumnChanges 

pub struct ColumnChanges {
    pub column_type: Option<ColumnType>,
    pub nullable: Option<bool>,
    pub default: Option<Option<String>>,
    pub max_length: Option<Option<u32>>,
    pub unique: Option<bool>,
}

Changes to apply to a column

Fields

column_type: Option<ColumnType>

New column type (if changed)

nullable: Option<bool>

New nullable setting (if changed)

default: Option<Option<String>>

New default value (Some(None) = remove default)

max_length: Option<Option<u32>>

New max_length (if changed)

unique: Option<bool>

New unique setting (if changed)

Implementations

impl ColumnChanges

pub fn is_empty(&self) -> bool

Check if there are any changes

Trait Implementations

impl Clone for ColumnChanges

fn clone(&self) -> ColumnChanges

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnChanges

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

Formats the value using the given formatter.

impl Default for ColumnChanges

fn default() -> ColumnChanges

Returns the “default value” for a type.

impl PartialEq for ColumnChanges

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

impl StructuralPartialEq for ColumnChanges