Struct ColMetaData 

pub struct ColMetaData {
    pub columns: Arc<[Column]>,
}

Shared column metadata for a result set.

This is shared across all rows in the result set to avoid duplicating metadata per row.

Fields

columns: Arc<[Column]>

Column definitions.

Implementations

impl ColMetaData

pub fn new(columns: Vec<Column>) -> Self

Create new column metadata from a list of columns.

pub fn len(&self) -> usize

Get the number of columns.

pub fn is_empty(&self) -> bool

Check if there are no columns.

pub fn get(&self, index: usize) -> Option<&Column>

Get a column by index.

pub fn find_by_name(&self, name: &str) -> Option<usize>

Find a column index by name (case-insensitive).

Trait Implementations

impl Clone for ColMetaData

fn clone(&self) -> ColMetaData

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColMetaData

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

Formats the value using the given formatter.