[hibernate-issues] [JIRA] (BVAL-783) @BatchSize with @ManyToMany does not work as expected when migrating 5 -> 6

규호 ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=624fda4... ) *created* an issue Bean Validation ( https://hibernate.atlassian.net/browse/BVAL?atlOrigin=eyJpIjoiMmQyZTdlOGR... ) / Bug ( https://hibernate.atlassian.net/browse/BVAL-783?atlOrigin=eyJpIjoiMmQyZTd... ) BVAL-783 ( https://hibernate.atlassian.net/browse/BVAL-783?atlOrigin=eyJpIjoiMmQyZTd... ) @BatchSize with @ManyToMany does not work as expected when migrating 5 -> 6 ( https://hibernate.atlassian.net/browse/BVAL-783?atlOrigin=eyJpIjoiMmQyZTd... ) Issue Type: Bug Assignee: Unassigned Created: 09/Jan/2023 05:45 AM Environment: - Spring Boot 3.0.1 - Hibernate 6.1.6.Final Priority: Major Reporter: 규호 ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=624fda4... ) Description Repo to reproduced the issue chlrbgh89/hibernate-batch-size-bug ( https://github.com/chlrbgh89/hibernate-batch-size-bug ) Post about this issue [ @BatchSize with @ManyToMany does not work as expected when migrating 5 -> 6|https://discourse.hibernate.org/t/batchsize-with-manytomany-does-not-wo...] @BatchSize with @ManyToMany does not work as expected when migrating 5 -> 6 Summary When using @BatchSize with @ManyToMany in Hibernate 5.6.14.Final, it generated queries: ``` Hibernate: select article0_.id as id1_0_, article0_.category_id as category2_0_ from article article0_ order by article0_.id DESC limit ? Hibernate: select tags0_.article_id as article_1_1_1_, tags0_.tags_id as tags_id2_1_1_, tag1_.id as id1_2_0_, tag1_.name as name2_2_0_ from article_tags tags0_ inner join tag tag1_ on tags0_.tags_id=tag1_.id where tags0_.article_id in (?, ?, ?, ?, ?) ``` However In Hibernate 6.1.6: ``` Hibernate: select t1_0.article_id,t1_1.id,t1_1.name from article_tags t1_0 join tag t1_1 on t1_1.id=t1_0.tags_id where t1_0.article_id in(?,?,?,?,?) Hibernate: select t1_0.article_id,t1_1.id,t1_1.name from article_tags t1_0 join tag t1_1 on t1_1.id=t1_0.tags_id where t1_0.article_id in(?,?) Hibernate: select t1_0.article_id,t1_1.id,t1_1.name from article_tags t1_0 join tag t1_1 on t1_1.id=t1_0.tags_id where t1_0.article_id in(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?) ``` Hibernate 6.1.6 generated queries 2 more and binded data in each query were article-id that had empty tag list. And the values in IN clause at the last query was always generated as much as the size of @BatchSize. Environment * Spring Boot 3.0.1 * Hibernate 6.1.6.Final ( https://hibernate.atlassian.net/browse/BVAL-783#add-comment?atlOrigin=eyJ... ) Add Comment ( https://hibernate.atlassian.net/browse/BVAL-783#add-comment?atlOrigin=eyJ... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100213- sha1:1fa7b87 )