HQL statement is not equal to the wording

When you write a HQL statement using Hibernate, I believe that there will be used to not equal to this condition, of course, most of them are used in the judgement is not equivalent to the case of empty strings, as for the HQL statement, in fact, and the general SQL statement does not make any difference, you can use!=, you can use the < , but there will be friends said, why these two symbols can not be used, this time, I suggest you still check your statement, whether the correct. For example, the null string is not equal to the following:

<> ' instead of <> '