如何在HQL中的"like"子句中转义通配符？

Question

如何在like子句中转义通配符？

例如:

select foo from Foo as foo where foo.bar like '%' || :filter ||'%'

query.setParameter("filter", "%");
query.list(); 
// I'd expect to get the foo's containing the '%' in bar, not all of them!

有任何想法吗？

Answer 1

在Hibernate 3中,您可以使用escape参数指定转义字符:

select foo from Foo as foo where foo.bar like '!%' escape '!'

我认为这应该有效,尽管我从未在实践中尝试过.