如何设置属性排序，当我使用Jpa Example.of

Question

How to assign property sort to generated sql? thanks

table has index , i want set index property is first in where

Message condition = new Message();
condition.setReceiver(account);
condition.setChannel(channel);
condition.setState(MessageState.INITIAL);

return messageRepository.findAll(Example.of(condition),Sort.by("createTime").descending());

The Generated sql is : where

message0_.channel=? 
and message0_.state=0 
and message0_.receiver=? 

I want: where

message0_.receiver=? 
and message0_.channel=0 
and message0_.state=?

Answer 1

There's no API available to order predicates, I'm afraid. If you want this level of control over the generated query, you're better off using a native query instead.

Why do you feel you need that, though? Most query optimizers ignore the order of predicates, in most cases. Did you actually EXPLAIN the version of the query generated by Spring Data to find that the index is not being used?