Struct Function 

pub struct Function {
    pub qualified_name: Vec<Identifier>,
    pub on_error: Option<Box<SqlBehavior>>,
    pub source_dialect: Option<DialectType>,
    pub name: String,
    pub args: Vec<Expression>,
    pub distinct: bool,
    pub trailing_comments: Vec<String>,
    pub use_bracket_syntax: bool,
    pub no_parens: bool,
    pub quoted: bool,
    pub span: Option<Span>,
    pub inferred_type: Option<DataType>,
}

Represent a scalar function call (e.g. UPPER(name), COALESCE(a, b)).

This is the generic function node. Well-known aggregates, window functions, and built-in functions each have their own dedicated Expression variants (e.g. Count, Sum, WindowFunction). Functions that the parser does not recognize as built-ins are represented with this struct.

Fields

qualified_name: Vec<Identifier>

Qualified name components preserve quoting without changing the node kind.

on_error: Option<Box<SqlBehavior>>

Optional DEFAULT/NULL/ERROR behavior after the arguments.

source_dialect: Option<DialectType>

Dialect whose call semantics must be retained through independent generation.

name: String

The function name, as originally written (may be schema-qualified).

args: Vec<Expression>

Positional arguments to the function.

distinct: bool

Whether DISTINCT was specified inside the call (e.g. COUNT(DISTINCT x)).

trailing_comments: Vec<String>

use_bracket_syntax: bool

Whether this function uses bracket syntax (e.g., MAP[keys, values])

no_parens: bool

Whether this function was called without parentheses (e.g., CURRENT_TIMESTAMP vs CURRENT_TIMESTAMP())

quoted: bool

Whether the function name was quoted (e.g., p.d.UdF in BigQuery)

span: Option<Span>

Source position span

inferred_type: Option<DataType>

Inferred data type from type annotation

Implementations

impl Function

pub fn qualified(name: Vec<Identifier>, args: Vec<Expression>) -> Self

Construct a call with individually quoted qualified name components.

pub fn new(name: impl Into<String>, args: Vec<Expression>) -> Self

Trait Implementations

impl Clone for Function

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 Function

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

Formats the value using the given formatter.

impl Default for Function

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Function

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Function

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Function

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 Function