Hibernate 如何使用HQL删除?
我用这个例子: 并尝试以这种方式删除:Hibernate 如何使用HQL删除?,hibernate,hql,hql-delete,Hibernate,Hql,Hql Delete,我用这个例子: 并尝试以这种方式删除: String qhl = "delete from logs where dateTtime >= current_date - interval '1 month'"; Query query = session.createQuery(hql); return query.executeUpdate(); 但我得到了这个错误: ERROR: line 1:61: unexpected token: '1 month' Mai 23, 201
String qhl = "delete from logs where dateTtime >= current_date - interval '1 month'";
Query query = session.createQuery(hql);
return query.executeUpdate();
但我得到了这个错误:
ERROR: line 1:61: unexpected token: '1 month'
Mai 23, 2014 3:07:22 PM org.hibernate.hql.internal.ast.ErrorCounter reportError
ERROR: line 1:61: unexpected token: '1 month'
line 1:61: unexpected token: '1 month'
at org.hibernate.hql.internal.antlr.HqlBaseParser.identPrimary(HqlBaseParser.java:4016)
at org.hibernate.hql.internal.antlr.HqlBaseParser.primaryExpression(HqlBaseParser.java:859)
at org.hibernate.hql.internal.antlr.HqlBaseParser.atom(HqlBaseParser.java:3390)
at org.hibernate.hql.internal.antlr.HqlBaseParser.unaryExpression(HqlBaseParser.java:3168)
...
尝试此操作时:
String qhl = "delete from logs where dateTtime >= ( select cast(date_trunc('month', current_date) as date) )";
错误是:
logs is not mapped [delete from logs where dateTtime >= ( select cast(date_trunc('month', current_date) as date) )]
我做错了什么?它不是有效的hql,只需使用hibernate的,用于供应商特定的数据库功能。什么是间隔“1个月”?这是从哪里来的?我认为它是特定于PSQL(PostgreSQL)的。它返回从今天开始的最后一个月的日期(Now()-30天)。然后它将不起作用,您需要检查HQL规范并生成它支持的查询