Enum AlterColumnAction 

pub enum AlterColumnAction {
    SetDataType {
        data_type: DataType,
        using: Option<Expression>,
        collate: Option<String>,
    },
    SetDefault(Expression),
    DropDefault,
    SetNotNull,
    DropNotNull,
    Comment(String),
    SetVisible,
    SetInvisible,
}

Actions for ALTER COLUMN

Variants

SetDataType

Fields

data_type: DataType

using: Option<Expression>

USING expression for type conversion (PostgreSQL)

collate: Option<String>

COLLATE clause (TSQL: ALTER COLUMN col TYPE COLLATE collation_name)

SetDefault(Expression)

DropDefault

SetNotNull

DropNotNull

Comment(String)

Set column comment

SetVisible

MySQL: SET VISIBLE

SetInvisible

MySQL: SET INVISIBLE

Trait Implementations

impl Clone for AlterColumnAction

fn clone(&self) -> AlterColumnAction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AlterColumnAction

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AlterColumnAction

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for AlterColumnAction

fn eq(&self, other: &AlterColumnAction) -> 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 Serialize for AlterColumnAction

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for AlterColumnAction