Struct AlterColumnsEntry 

pub struct AlterColumnsEntry {
    pub path: String,
    pub data_type: Option<Value>,
    pub rename: Option<Option<String>>,
    pub nullable: Option<Option<bool>>,
    pub virtual_column: Option<Option<Box<AlterVirtualColumnEntry>>>,
}

Fields

path: String

Lance field path to alter. Nested fields use dot-separated segments; use backtick-quoted segments for literal dots and double backticks inside quoted segments. Use canonical full paths for display and errors; leaf names alone only identify top-level fields; invalid or unresolved paths should return InvalidInput or TableColumnNotFound.

data_type: Option<Value>

New data type for the column using JSON representation (optional)

rename: Option<Option<String>>

New name for the column (optional)

nullable: Option<Option<bool>>

Whether the column should be nullable (optional)

virtual_column: Option<Option<Box<AlterVirtualColumnEntry>>>

Implementations

impl AlterColumnsEntry

pub fn new(path: String) -> AlterColumnsEntry

Trait Implementations

impl Clone for AlterColumnsEntry

fn clone(&self) -> AlterColumnsEntry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AlterColumnsEntry

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

Formats the value using the given formatter.

impl Default for AlterColumnsEntry

fn default() -> AlterColumnsEntry

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for AlterColumnsEntry

fn deserialize<__D>( __deserializer: __D, ) -> Result<AlterColumnsEntry, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for AlterColumnsEntry

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

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for AlterColumnsEntry