这个HQL有什么问题?
问题描述:
session.createQuery("Select attribute from GoodsSection tgs " +
"join gs.ascendants ags join ags.attributes attribute " +
"where attribute.outerId = :outerId and tgs = :section ")
.setString("outerId", pOuterId)
.setEntity("section", section)
.setMaxResults(1)
.uniqueResult();
“节点没有任何数据类型”看起来好像没什么问题,但结果是这个HQL有什么问题?
java.lang.IllegalStateException: No data type for node: org.hibernate.hql.ast.tree.IdentNode
\-[IDENT] IdentNode: 'attribute' {originalText=attribute}
at org.hibernate.hql.ast.tree.SelectClause.initializeExplicitSelectClause(SelectClause.java:145)
at org.hibernate.hql.ast.HqlSqlWalker.useSelectClause(HqlSqlWalker.java:705)
at org.hibernate.hql.ast.HqlSqlWalker.processQuery(HqlSqlWalker.java:529)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:645)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:281)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:229)
为什么?怎么了?
答
您尚未定义“gs”别名。你只有“ags”和“tgs”。
答
当出现此错误时,应该知道单词或变量之间没有找到空格或没有空格。