Enum CompileError 

pub enum CompileError {
    Unsupported(String),
    Expression(EvalError),
    Unknown(String),
    Cycle,
    UnsupportedAggregate(String),
    MultiColumnGroupBy,
    HeterogeneousAggregateColumns(String),
    MultiColumnOrderBy,
}

Compile-time errors. Runtime evaluation can’t fail — every closure returns some Row — so any rejection lands here.

Variants

Unsupported(String)

Operator kind not yet implemented by the compiler.

Expression(EvalError)

Expression evaluator rejected an inline string.

Unknown(String)

Identifier references a column / table the schema lookup doesn’t know about.

Cycle

MIR has a cycle. petgraph’s toposort surfaces this.

UnsupportedAggregate(String)

Aggregate function unsupported (something other than COUNT / SUM / MIN / MAX / AVG / COUNT DISTINCT).

MultiColumnGroupBy

Multi-column group-by (one column is the only shape we wire).

HeterogeneousAggregateColumns(String)

Aggregates over different value columns aren’t wired — aggregate_i64 only takes one input column per call.

MultiColumnOrderBy

Multi-column ORDER BY not yet wired.

Trait Implementations

impl Debug for CompileError

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

Formats the value using the given formatter.

impl Display for CompileError

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

Formats the value using the given formatter.

impl Error for CompileError

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 CompileError

fn from(source: EvalError) -> Self

Converts to this type from the input type.