Struct UpdateFromSources 

pub struct UpdateFromSources {
    pub from: FromClause,
    pub sub_where: Option<Expr>,
}

v7.39 (round 533) — what UPDATE … FROM src WHERE cond was lowered FROM, kept so the engine can finish the job.

The parser rewrites the statement onto correlated subqueries, and it can only classify a QUALIFIED leaf: deciding whether an unqualified name belongs to the target or to a source needs their column lists, which parse time does not have. Carrying the clause lets the engine — which has the catalog — resolve the rest.

Fields

from: FromClause

sub_where: Option<Expr>

Trait Implementations

impl Clone for UpdateFromSources

fn clone(&self) -> UpdateFromSources

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UpdateFromSources

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

Formats the value using the given formatter.

impl PartialEq for UpdateFromSources

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for UpdateFromSources