3
我有两个疑问运行:为什么我的“左连接”正在抛出“意外令牌:上”错误?
2012-08-07 11:24:02,561 ERROR [org.hibernate.hql.PARSER] (http-0.0.0.0-8080-12) line 1:105: unexpected token: ON
2012-08-07 11:24:02,686 ERROR [org.jboss.aspects.tx.TxPolicy] (http-0.0.0.0-8080-12) javax.ejb.EJBTransactionRolledbackException: org.hibernate.hql.ast.QuerySyntaxException: unexpected token: ON near line 1, column 105
[SELECT count(o) from ejb.entity.News o LEFT JOIN NewsNewsDistributionServiceLink p ON o.id = p.newsId WHERE o.statusId = ?1 AND p.newsDistServiceCode is ?2]
2012-08-07 11:26:15,605 ERROR [org.hibernate.hql.PARSER] (http-0.0.0.0-8080-12) line 1:105: unexpected token: ON
2012-08-07 11:26:15,609 ERROR [org.jboss.aspects.tx.TxPolicy] (http-0.0.0.0-8080-12) javax.ejb.EJBTransactionRolledbackException: org.hibernate.hql.ast.QuerySyntaxException: unexpected token: ON near line 1, column 105
[SELECT count(o) from entity.News o LEFT JOIN NewsNewsDistributionServiceLink p ON o.id = p.newsId WHERE o.companyId = ?1 AND o.statusId = ?2 AND p.newsDistServiceCode is ?3]
我跑了SQuirreL SQL客户端执行以下操作:
select * from news n left join news_news_distribution_service_link nl
on n.id=nl.news_id
where news_distribution_service_code is null
这将返回结果,但是当我翻译这对我的Java Servlet,它抛出错误。
新闻台:
id -PK
company_id
user_id
title
type_id
status_id
location
is_immediate
contents
created_date
last_modified_date
release_date
delete_date
corrected_news_id
can_distribute
was_distributed
NewsNewsDistLink表:
id -PK
news_id - this is equal to the id in News
news_distribution_service_code
代码:
String _query = "SELECT COUNT(o) FROM News o " + (filter.tierGroup != null ? TIER_GROUP_JOIN : "") + "WHERE ";
WhereClauseBuilder builder = getWhereClause(filter);
_query+= builder.where.toString();
Query query = em.createQuery(_query);
query.setHint("org.hibernate.cacheable", true);
builder.bind(query);
的whereClauseBuilder()基本上 “其中” 后加参数,可以在bind()基本上将参数与##及其值绑定。最后,p.newsDistServiceCode在大多数情况下很可能为空(> 95%)。
发布您的Java和Hibernate代码 – 2012-08-07 16:41:43
@Michael添加了代码 – iCodeLikeImDrunk 2012-08-07 16:51:30
而不是COUNT(o)您尝试了COUNT(*)吗? – contactmatt 2012-08-07 18:39:33