Play Framework - Sql 查询返回 0 个结果

Question

public static List<SqlRow> findQuery(int page , int index, String source , String destination , Date date) {



    String sql = "select DISTINCT airplane.id,airplane.reg_no,airplane.type,airplane.total_seat,source,destination,depart_date,amount from airplane,routee,flight,fare,airport ,flight_airplane   where airplane.id IN  (select AIRPLANE_ID  from FLIGHT_AIRPLANE where FLIGHT_ID IN (select id from flight where depart_date= :date \n" +
            "AND ROUTEE_ID IN (select id from routee where source= :first and destination= :destination and airport_id IN (select id from airport where CITY= :first OR COUNTRY= :first) AND fare_id IN (select id from fare) ))\n" +
            ") and source= :first  and destination= :destination and depart_date= :date order by amount   ;";

    SqlQuery sqlQuery = Ebean.createSqlQuery(sql);
    sqlQuery.setParameter("first",source);
    sqlQuery.setParameter("destination",destination);
    sqlQuery.setParameter("date",date);

    return  sqlQuery.findList();

}

这是我为连接各种 table 和 return 列表而编写的查询。这在我的电脑上很好用，但如果我在不同的 PC/laptop 中尝试它，它总是 return 0 结果。让我知道我做错了什么。

谢谢

Answer 1

问题出在表单的绑定值 (NULL) 上，因此 NULL 值作为参数传递，产生 0 个结果。要解决绑定值问题，我所做的就是：

激活剂清洁

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Play Framework - Sql 查询返回 0 个结果

Play Framework - Sql query returning 0 result

playframework

playframework-2.3

ebean