lMasterSparkl commented on issue #7703:
URL:
https://github.com/apache/shardingsphere/issues/7703#issuecomment-1070125715
> Through the sql that you execute, shardingsphere cannot determine whether
did column has changed, so you need to specify value of did in where condition.
By comparing did value in set clause with did value in where condition,
shardingsphere can determine whether the data node has changed due to update
statement.
oh I understand, I will try to find the way for jpa's save method that
append 'where did=xxx' in it's update sql . because now I use nativeQuery such
as
```
@Transactional
@Modifying
@Query(value = "update post set update_dt = now(),text=:#{#post.text} ,
images=:#{#post.images},videos=:#{#post.videos}" +
",base_like=:#{#post.baseLike},base_share=:#{#post.baseShare},is_top=:#{#post.getIsTop()},tag=:#{#post.tag}
" +
"where did = :#{#post.did} and id = :#{#post.id}", nativeQuery =
true)
void updatePost(Post post);
```
in actually we have many columns to update and it's complex with just append
sharding column in where sentence , in addition I need to judge every column
is or not null . I think use nativeQuery is Not the original intention that
use jpa. Can you give some suggestion to optimization this code.thx
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