Struct MergeUpdateExpr 

pub struct MergeUpdateExpr {
    pub update_token: AttachedToken,
    pub assignments: Vec<Assignment>,
    pub update_predicate: Option<Expr>,
    pub delete_predicate: Option<Expr>,
}

The expression used to update rows within a MERGE statement.

Examples

UPDATE SET quantity = T.quantity + S.quantity

Snowflake BigQuery Oracle

Fields

update_token: AttachedToken

The UPDATE token that starts the sub-expression.

assignments: Vec<Assignment>

The update assiment expressions

update_predicate: Option<Expr>

where_clause for the update (Oralce specific)

delete_predicate: Option<Expr>

delete_clause for the update “delete where” (Oracle specific)

Trait Implementations

impl Clone for MergeUpdateExpr

fn clone(&self) -> MergeUpdateExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MergeUpdateExpr

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

Formats the value using the given formatter.

impl Display for MergeUpdateExpr

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

Formats the value using the given formatter.

impl Eq for MergeUpdateExpr

impl Hash for MergeUpdateExpr

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

where __H: Hasher,

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 Ord for MergeUpdateExpr

fn cmp(&self, other: &MergeUpdateExpr) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for MergeUpdateExpr

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for MergeUpdateExpr

fn partial_cmp(&self, other: &MergeUpdateExpr) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Spanned for MergeUpdateExpr

fn span(&self) -> Span

Return the Span (the minimum and maximum Location) for this AST node, by recursively combining the spans of its children.

impl StructuralPartialEq for MergeUpdateExpr

impl Visit for MergeUpdateExpr

fn visit<V>(&self, visitor: &mut V) -> ControlFlow<<V as Visitor>::Break>

where V: Visitor,

Visit this node with the provided Visitor.

impl VisitMut for MergeUpdateExpr

fn visit<V>(&mut self, visitor: &mut V) -> ControlFlow<<V as VisitorMut>::Break>

where V: VisitorMut,

Mutably visit this node with the provided VisitorMut.