我正在使用 Hibernate 4.2.7.Final 和Google genericDAO 1.2.0。我对如何使用 group by 编写搜索感兴趣?
例如:
select a, sum(b) from table group by a
和
Search search = new Search();
search.addFieldGroupBy("a"); //this does not exist, I need something like this
search.addField("b", Field.OP_SUM);