Struct ColumnInfo 

pub struct ColumnInfo {
    pub name_to_index: HashMap<String, usize>,
    pub oids: Vec<u32>,
    pub formats: Vec<i16>,
}

Metadata about the columns returned by a query.

Maps column names to positional indices and stores OID / format information so that PgRow values can be decoded correctly.

Fields

name_to_index: HashMap<String, usize>

Lookup table from column name to zero-based index.

oids: Vec<u32>

PostgreSQL type OIDs, one per column.

formats: Vec<i16>

Wire format codes (0 = text, 1 = binary), one per column.

Implementations

impl ColumnInfo

pub fn from_fields(fields: &[FieldDescription]) -> Self

Build column metadata from the RowDescription field list returned by the backend after a query.

Trait Implementations

impl Clone for ColumnInfo

fn clone(&self) -> ColumnInfo

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnInfo

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

Formats the value using the given formatter.