如何編寫休眠條件查詢下面的SQL查詢

Question

SELECT (Title + ' ' & Forename & ' ' & Surname) AS FullName FROM details; 

或

SELECT (Title || ' ' || Forename || ' ' || Surname) AS FullName FROM details; 

，也是我想用 休眠投影的全名

Answer 1

您可以使用ProjectionList如果你想條件底部突起如

ProjectionList prjection = Projections.projectionList(); 
if(abc){ 
    prjection.add(Projections.property("firstname")); 
} 
else if(xyz){ 
    prjection.add(Projections.property("Surname")); 
} 

    ........ 

    criteria.setProjection(prjection); 

如果你想要OR /和條件標準比你c使用 Junction invitationTypeNotJunction = Restrictions.conjunction（）; Junction invitationTypeJunction = Restrictions.disjunction（）;

可以參考http://www.java2s.com/Tutorial/Java/0350__Hibernate/RestrictionsDisjunction.htm鏈接，我知道這並不回答這個問題的更多信息