我需要写一个set和select组合的查询：
类似这种：

SET @row_num = 0, @group = '';
SELECT * FROM (
    SELECT *, 
        @row_num := IF(@group = CONCAT(id, user), @row_num + 1, 1) AS row_num,
        @group := CONCAT(id, user)
    FROM xxx_record
    WHERE id = 'your_id'
    ORDER BY id, user, update_time DESC
) subq
WHERE row_num <= 5;

我用Sqls.create（）方式构建NutSql 然后执行，一开始报错是是把这个语句当成Other了，显式设置为SqlType.Select
还是报错，好像jdbc不支持这种复合语句查询？有没有执行复合语句的方法?