Struct DeclaredColumn 

pub struct DeclaredColumn {
    pub name: Vec<u8>,
    pub declared_type: Vec<u8>,
    pub affinity: Affinity,
    pub collation: Vec<u8>,
    pub hidden: bool,
}

One column a module declares.

Fields

name: Vec<u8>

The column name.

declared_type: Vec<u8>

The declared type, exactly as the module wrote it.

affinity: Affinity

The affinity that type maps to.

collation: Vec<u8>

The folded name of the column’s collation.

hidden: bool

Whether the column is hidden from SELECT * and from an INSERT with no column list.

A hidden column is how a table-valued function takes its arguments: json_each('[1]') is SELECT * FROM json_each WHERE json = '[1]', and json is a hidden column. It is the whole mechanism, not a display preference.

Implementations

impl DeclaredColumn

pub fn visible(name: &str) -> DeclaredColumn

Returns an ordinary visible column with no declared type.

pub fn hidden(name: &str) -> DeclaredColumn

Returns a hidden column, which is how an argument is declared.

pub fn typed(self, declared: &str) -> DeclaredColumn

Returns the column with a declared type and the affinity it implies.

Trait Implementations

impl Clone for DeclaredColumn

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DeclaredColumn

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

Formats the value using the given formatter.

impl Eq for DeclaredColumn

impl PartialEq for DeclaredColumn

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DeclaredColumn