java - HQL query for Distinct records -


pls error time run application ....any pls.

    java.lang.illegalargumentexception: node traverse cannot null!         org.hibernate.hql.internal.ast.util.nodetraverser.traversedepthfirst(nodetraverser.java:63)         org.hibernate.hql.internal.ast.querytranslatorimpl.parse(querytranslatorimpl.java:272)         org.hibernate.hql.internal.ast.querytranslatorimpl.docompile(querytranslatorimpl.java:180)         org.hibernate.hql.internal.ast.querytranslatorimpl.compile(querytranslatorimpl.java:136)         org.hibernate.engine.query.spi.hqlqueryplan.<init>(hqlqueryplan.java:101)         org.hibernate.engine.query.spi.hqlqueryplan.<init>(hqlqueryplan.java:80)         org.hibernate.engine.query.spi.queryplancache.gethqlqueryplan(queryplancache.java:119)   org.hibernate.internal.abstractsessionimpl.gethqlqueryplan(abstractsessionimpl.java:214)         org.hibernate.internal.abstractsessionimpl.createquery(abstractsessionimpl.java:192)         org.hibernate.internal.sessionimpl.createquery(sessionimpl.java:1537)         org.hibernate.ejb.abstractentitymanagerimpl.createquery(abstractentitymanagerimpl.java:285)         sun.reflect.generatedmethodaccessor31.invoke(unknown source)

this code av in repository class

@query("distinct v voucher v v.vouchertype.typeid = :typeid ")        public list<voucher> finddistinctbyvouchertype(@param("typeid") long vouchertypeid);

there no issue query. above exception indicates 

distinct v voucher v v.vouchertype.typeid = :typeid

is not returning result


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