如何在HQL中编写类似的查询

Question

我想执行搜索以特定字母开头的特定字符串.因此,例如,如果起始字母表是'A'den,则它应该产生一个结果,该结果将包含所有带字母表的字符串'A'.

我该如何实现这一目标？

我的查询如下所示

Query qry = session.createQuery("From RegistrationBean as rb where rb."+searchCriteria+"  like %?%");
qry.setString(0,searchField);

Answer 1

将您的查询更改为:

Query qry = session.createQuery("From RegistrationBean as rb where rb."+searchCriteria+"  like ?");
qry.setString(0, "%"+searchField+"%");

Answer 2

您可以使用标准来使用

session = sessionFactory.openSession();
Criteria query = session.createCriteria(Pojo.class);
query.add(Restrictions.like("column", "a", MatchMode.START));

它将为您提供以alpha-bate'a'开头的字符串列表.

Answer 3

改成

Query qry = session.createQuery("From RegistrationBean as rb where rb ";
if (searchField != null)
{
    qry = qry + " where rb.searchCriteria like :searchField ";
}
if ( searchField!= null)
{
    query.setString("searchField","%"+searchField+"%");
}

Answer 4

这条路

createQuery("from RegistrationBean as rb where rb.:searchCriteria like '%:searchField%'");