Enum EvalError 

pub enum EvalError {
    DivisionByZero,
    UnknownFunction {
        name: String,
    },
    VectorDimensionMismatch {
        function: &'static str,
        expected: usize,
        got: usize,
    },
    ArgumentType {
        function: &'static str,
        position: usize,
        expected: &'static str,
        got: &'static str,
    },
    InvalidJsonPath {
        function: &'static str,
        path: String,
        reason: String,
    },
    NumericOverflow {
        function: &'static str,
    },
}

Error type for row-scope SqlExpr evaluation.

Mirrors the WindowError idiom: a small, thiserror-derived enum living next to the evaluator it describes. Bad casts, wrong argument counts and unknown-value coercions fold to Value::Null. These faults fail the statement instead:

• division or modulo by a zero divisor, SQLSTATE 22012;
• a call to a function no evaluator implements. It never evaluates to a silent NULL;
• a function argument it cannot compute on: vectors of different dimensions, an argument of the wrong type, a malformed JSONPath. SQLSTATE 22000. A NULL argument stays NULL instead;
• an exact integer SUM past the Decimal range, SQLSTATE 22000.

Variants

DivisionByZero

UnknownFunction

Fields

name: String

The function name as called.

VectorDimensionMismatch

Two vector operands have different dimensions. Same message shape as the vector engine’s dimension error.

Fields

function: &'static str

expected: usize

Dimension of the first operand.

got: usize

Dimension of the second operand.

ArgumentType

An argument holds a value of a type the function cannot compute on.

Fields

function: &'static str

position: usize

1-based argument position.

expected: &'static str

got: &'static str

Value::type_name of the argument received.

InvalidJsonPath

A path argument is not a supported JSONPath.

Fields

function: &'static str

path: String

reason: String

NumericOverflow

An exact integer aggregate total lies outside the Decimal range.

Fields

function: &'static str

Trait Implementations

impl Clone for EvalError

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 EvalError

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

Formats the value using the given formatter.

impl Display for EvalError

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

Formats the value using the given formatter.

impl Eq for EvalError

impl Error for EvalError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<EvalError> for WindowError

fn from(source: EvalError) -> Self

Converts to this type from the input type.

impl PartialEq for EvalError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for EvalError