java - 期待关闭，在第 1 行附近发现 'WHEN' 异常？如何在 HIbernate 中摆脱它

Question

我在 Java Hibernate 的查询中使用 WHEN CASE 条件。该查询在 MySQL 工作台中工作正常，但在 Java 控制台中出现此异常。

:org.hibernate.hql.internal.ast.QuerySyntaxException: expecting CLOSE, found 'WHEN' near line 1.

这是我的查询，

StringBuffer hql = new StringBuffer();


hql.append(" SELECT ");
            hql.append(" v.year,");
            hql.append(" v.number,");
            hql.append(" ap.property,");
            hql.append(" CASE");
            hql.append(" WHEN ap.id = 1  THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 2  THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 3  THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 4  THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 5  THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 6  THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 7  THEN AVG(v.Month101)");
            hql.append(" WHEN ap.id = 8  THEN AVG(v.Month101)");
            hql.append(" WHEN ap.id = 9  THEN AVG(v.Month101)");
            hql.append(" WHEN ap.id = 10 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 11 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 12 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 13 THEN AVG(v.Month101)");
            hql.append(" WHEN ap.id = 14 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 15 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 16 THEN AVG(v.Month101)");
            hql.append(" WHEN ap.id = 17 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 18 THEN AVG(v.Month101)");
            hql.append(" WHEN ap.id = 19 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 20 THEN AVG(v.Month101)");
            hql.append(" WHEN ap.id = 21 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 22 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 23 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 24 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 25 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 26 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 27 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 28 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 29 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 30 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 31 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 32 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 33 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 34 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 35 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 36 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 37 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 38 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 39 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 40 THEN SUM(v.Month101)");
            hql.append(" WHEN ap.id = 41 THEN SUM(v.Month101)");
            hql.append(" END AS jan,");
            hql.append(" FROM");
            hql.append(" table1 v,");
            hql.append(" table2 ap");
            hql.append(" WHERE");
            hql.append(" v.number=01");
            hql.append(" AND v.Id = ap.id");
            hql.append(" AND v.year =2015");
            hql.append(" GROUP BY ap.property");
            hql.append(" ORDER BY v.Id");

我已经有这个条件 12 个月了，语法有什么问题吗？有人能解释一下吗？

Answer 1

我认为由于 as END AS jan 后面有一个逗号而出现语法错误

hql.append(" END AS jan,");
hql.append(" FROM");

删除上面 jan 之后的逗号并再次检查 - 我想它会起作用。