命名查詢以選擇具有MAX（列名稱）的行，使用另一列的DISTINCT

Question

我有一個類似於這個問題中描述的情況 ，我寫了一個相同的查詢，但是當我嘗試將其寫為jpql命名查詢時，我收到一個錯誤。

我的查詢：

@NamedQuery(
            name = "findRankingsBetween",
            query = "SELECT rt FROM Rankingtable rt " +
                        "INNER JOIN " +
                            "(SELECT teamId, MAX(lastupdate) as MaxDateTime " +
                            "FROM Rankingtable " +
                            "GROUP BY teamId) grouped " +
                        "ON rt.teamId = grouped.teamId " +
                        "AND rt.lastupdate = grouped.MaxDateTime " +
                    "WHERE rt.lastupdate BETWEEN :from AND :to"
            )

錯誤：

Error in named query: findRankingsBetween: org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected token: ( near line 1, column 79

如何在jpql中正確編寫查詢？

Answer 1

如本回答所述，JPQL中的子查詢只能出現在select和where子句中。 Hibernate doc 。

JPQL中的等效查詢是：

"SELECT rt FROM Rankingtable rt " +
"WHERE rt.lastupdate = (SELECT MAX(r2.lastupdate) " +
                       "FROM Rankingtable r2 " +
                       "WHERE r2.teamid = rt.teamid) " +
"AND rt.lastupdate BETWEEN :from AND :to"