Method explain_json

src/sql/src/plan/explain.rs:37–39

(&'a mut self, context: &'a Self::Context)

    }

    fn explain_json(&'a mut self, context: &'a Self::Context) -> Result<Self::Json, ExplainError> {
        self.as_explain_single_plan(context)
    }
}

impl<'a> HirRelationExpr {