我已经开始学习solr，并尝试理解和实现与mysql中相同的查询，以相同的顺序和逻辑返回结果。
我需要的是：
返回所有的第一个职位标记为溢价（布尔，真），然后其他
按创建日期排序/排序新建>旧。。
默认mysql示例查询/不带搜索参数：

SELECT 
  * 
FROM 
  postings Postings 
  // LEFT JOIN query ..
WHERE 
  (
    // where query..
  ) 
ORDER BY 
  Postings.premium DESC, // <--- bool (1), 
  FIELD(Postings.source, "local") DESC, 
  Postings.cpc DESC

以及带有搜索参数的示例：

SELECT 
  MATCH (Postings.title) AGAINST ('developer' IN BOOLEAN MODE) AS `Postings__relavance_title`, 
  MATCH (Postings.description) AGAINST ('developer' IN BOOLEAN MODE) AS `Postings__relavance_description`, 
  // other Fields 
FROM 
  postings Postings 
  // LEFT JOIN queries ...
WHERE 
  (
    MATCH (
      Postings.title, Postings.description
    ) AGAINST ('developer' IN BOOLEAN MODE) 
  ) 
ORDER BY 
  (Postings__relavance_title * 2)+ Postings__relavance_description DESC, 
  Postings.premium DESC, // <--- bool (1)
  FIELD(Postings.source, "local") DESC, 
  Postings.cpc DESC

如何以同样的方式对solr数据进行排序/排序？