Enum ValuesRepresentation 

pub enum ValuesRepresentation {
    Deferred {
        force_union_all_from: Option<usize>,
    },
    Frozen {
        donor_row: Option<usize>,
    },
}

How SQLite will execute a syntactic VALUES clause.

SQLite may implement the rows as a coroutine or lower some rows through a UNION ALL path. That choice determines which row donates comparison affinity and collation metadata. Parsing records the first row forced onto the UNION ALL path; execution later freezes the concrete donor after consulting the active function registry.

Variants

Deferred

Donor selection has not yet consulted the active function registry.

Fields

force_union_all_from: Option<usize>

First row at which a previously parsed WITH clause forces the UNION ALL representation, or None when no such row was seen.

Frozen

Donor selection has been resolved for one execution or preparation.

Fields

donor_row: Option<usize>

Row donating comparison metadata, or None for an empty programmatically constructed clause.

Trait Implementations

impl Clone for ValuesRepresentation

fn clone(&self) -> ValuesRepresentation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ValuesRepresentation

impl Debug for ValuesRepresentation

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

Formats the value using the given formatter.

impl Eq for ValuesRepresentation

impl Hash for ValuesRepresentation

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ValuesRepresentation

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ValuesRepresentation