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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MergeUpdateExpr

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for MergeUpdateExpr

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

Formats the value using the given formatter.

impl Hash for MergeUpdateExpr

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 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 Serialize for MergeUpdateExpr

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

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 Visit for MergeUpdateExpr

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

impl VisitMut for MergeUpdateExpr

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

impl Eq for MergeUpdateExpr

impl StructuralPartialEq for MergeUpdateExpr