Method inner_precedence

datafusion/sql/src/unparser/expr.rs:1033–1044

(&self, expr: &ast::Expr)

    }

    fn inner_precedence(&self, expr: &ast::Expr) -> u8 {
        match expr {
            ast::Expr::Nested(_) | ast::Expr::Identifier(_) | ast::Expr::Value(_) => 100,
            ast::Expr::BinaryOp { op, .. } => self.sql_op_precedence(op),
            // Closest precedence we currently have to Between is PGLikeMatch
            // (https://www.postgresql.org/docs/7.2/sql-precedence.html)
            ast::Expr::Between { .. } => {
                self.sql_op_precedence(&BinaryOperator::PGLikeMatch)
            }
            _ => 0,
        }
    }

    pub(super) fn between_op_to_sql(
        &self,