Method debug_explain

src/expr/src/relation.rs:1499–1511

Pretty-print this [MirRelationExpr] to a string using a custom [ExplainConfig] and an optionally provided [ExprHumanizer]. This is intended for debugging and tests, not users.

(
        &self,
        config: &ExplainConfig,
        humanizer: Option<&dyn ExprHumanizer>,
    )

    /// [ExplainConfig] and an optionally provided [ExprHumanizer].
    /// This is intended for debugging and tests, not users.
    pub fn debug_explain(
        &self,
        config: &ExplainConfig,
        humanizer: Option<&dyn ExprHumanizer>,
    ) -> String {
        text_string_at(self, || PlanRenderingContext {
            indent: Indent::default(),
            humanizer: humanizer.unwrap_or(&DummyHumanizer),
            annotations: BTreeMap::default(),
            config,
            ambiguous_ids: BTreeSet::default(),
        })
    }

    /// Take ownership of `self`, leaving an empty `MirRelationExpr::Constant` with the optionally
    /// given scalar types. The given scalar types should be `base_eq` with the types that `typ()`