Struct ColumnSpec 

pub struct ColumnSpec {
    pub name: &'static str,
    pub type_oid: Oid,
    pub nullable: bool,
    pub known: bool,
}

One expected result column.

Fields

name: &'static str

Expected column name; empty means “any name” (positional match).

type_oid: Oid

The canonical OID of the Rust type.

nullable: bool

Whether the Rust type is nullable (Option<...>).

known: bool

Whether nullable is known. For server-side expression columns the nullability cannot be derived, so it is not enforced.

Trait Implementations

impl Clone for ColumnSpec

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ColumnSpec

impl Debug for ColumnSpec

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

Formats the value using the given formatter.

impl Eq for ColumnSpec

impl PartialEq for ColumnSpec

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ColumnSpec