Class Operation

src/sql/src/func.rs:219–230

Builds an expression that evaluates a scalar function on the provided input expressions.

/// Builds an expression that evaluates a scalar function on the provided
/// input expressions.
pub struct Operation<R>(
    pub  Box<
        dyn Fn(
                &ExprContext,
                Vec<CoercibleScalarExpr>,
                &ParamList,
                Vec<ColumnOrder>,
            ) -> Result<R, PlanError>
            + Send
            + Sync,
    >,
);

impl<R> fmt::Debug for Operation<R> {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {