Struct CaseStatement 

pub struct CaseStatement {
    pub case_token: AttachedToken,
    pub match_expr: Option<Expr>,
    pub when_blocks: Vec<ConditionalStatementBlock>,
    pub else_block: Option<ConditionalStatementBlock>,
    pub end_case_token: AttachedToken,
}

A CASE statement.

Examples:

CASE
    WHEN EXISTS(SELECT 1)
        THEN SELECT 1 FROM T;
    WHEN EXISTS(SELECT 2)
        THEN SELECT 1 FROM U;
    ELSE
        SELECT 1 FROM V;
END CASE;

BigQuery Snowflake

Fields

case_token: AttachedToken

The CASE token that starts the statement.

match_expr: Option<Expr>

Optional expression to match against in CASE ... WHEN.

when_blocks: Vec<ConditionalStatementBlock>

The WHEN ... THEN blocks of the CASE statement.

else_block: Option<ConditionalStatementBlock>

Optional ELSE block for the CASE statement.

end_case_token: AttachedToken

The last token of the statement (END or CASE).

Trait Implementations

impl Clone for CaseStatement

fn clone(&self) -> CaseStatement

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CaseStatement

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

Formats the value using the given formatter.

impl Display for CaseStatement

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

Formats the value using the given formatter.

impl From<CaseStatement> for Statement

fn from(c: CaseStatement) -> Self

Converts to this type from the input type.

impl Hash for CaseStatement

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 CaseStatement

fn cmp(&self, other: &CaseStatement) -> 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 CaseStatement

fn eq(&self, other: &CaseStatement) -> 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 CaseStatement

fn partial_cmp(&self, other: &CaseStatement) -> 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 CaseStatement

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 CaseStatement

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

Visit this node with the provided Visitor.

impl VisitMut for CaseStatement

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

Mutably visit this node with the provided VisitorMut.

impl Eq for CaseStatement

impl StructuralPartialEq for CaseStatement