2

是否可以将分页与自定义 SQL ebean 查询一起使用？例如，当我设置此查询时：

String sql =
          "SELECT   q.event_id              AS event_id,"
        + "         MIN(q.total_price)      AS price_min, "
        + "         MAX(q.total_price)      AS price_max "
        + "FROM     quote q "
        + "WHERE    q.quote_status_id = 2 "
        + "    AND  q.event_id IS NOT NULL "
        + "GROUP    BY q.event_id";

RawSql rawSql = RawSqlBuilder.unparsed(sql)
        .columnMapping("event_id", "event.id")
        .columnMapping("price_min", "priceMin")
        .columnMapping("price_max", "priceMax")
        .create();

com.avaje.ebean.Query<salesPipelineRow> ebeanQuery = Ebean.find(salesPipelineRow.class);

ebeanQuery.setRawSql(rawSql);

...然后我可以打电话...

List<salesPipelineRow> list = ebeanQuery.findList();

...没有任何问题（即我得到一个有效的 salesPipelineRow 对象列表）。但是，当我改为尝试类似...

Page<salesPipelineRow> page = ebeanQuery.findPagingList(5).getPage(0);

...我收到一个空错误，例如：

java.util.concurrent.ExecutionException: javax.persistence.PersistenceException: 
Query threw SQLException:You have an error in your SQL syntax; check the manual that corresponds to your MySQL     
server version for the right syntax to use near 'null t0
limit 6' at line 2
Bind values:[]

Query was:
select t0.price_min c0, t0.price_max c1, t0.event_id c2
from null t0
limit 6

谁能解释为什么 FROM、WHERE 和 GROUP BY 子句被“null”取代？

谢谢！

4

1 回答 1

0

我想这必须通过 EBean 邮件列表运行（如果它仍然处于活动状态。我认为 EBean 已经死了）。对我来说似乎是一个错误。应该呈现的 SQL将是：

select t0.price_min c0, t0.price_max c1, t0.event_id c2
from (
    SELECT [... your raw SQL statement here ...]
) t0
limit 6
于 2013-10-27T10:22:44.027 回答