Struct Lineage 

pub struct Lineage {
    pub columns: Vec<OutputColumn>,
    pub tables: BTreeSet<TableRef>,
    pub target: Option<TableRef>,
}

The lineage extracted from a single statement.

Fields

columns: Vec<OutputColumn>

One entry per output column, in projection (or target) order.

tables: BTreeSet<TableRef>

All physical input/source tables referenced by the statement.

target: Option<TableRef>

Target table for a write statement; None for a read (SELECT).

Implementations

impl Lineage

pub fn empty() -> Self

Returns an empty lineage (no columns, no tables, no target).

Trait Implementations

impl Clone for Lineage

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 Lineage

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Lineage

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Lineage

impl PartialEq for Lineage

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Lineage

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Lineage