[hibernate-issues] [JIRA] (HHH-15467) Redundant join in generated statement for JPQL with simple equality condition

Krzysiek Bieroń ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=6308fd5... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiZmViZGZiNmE3... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-15467?atlOrigin=eyJpIjoiZmViZG... ) HHH-15467 ( https://hibernate.atlassian.net/browse/HHH-15467?atlOrigin=eyJpIjoiZmViZG... ) Redundant join in generated statement for JPQL with simple equality condition ( https://hibernate.atlassian.net/browse/HHH-15467?atlOrigin=eyJpIjoiZmViZG... ) Issue Type: Bug Affects Versions: 5.6.10 Assignee: Unassigned Created: 26/Aug/2022 10:44 AM Priority: Major Reporter: Krzysiek Bieroń ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=6308fd5... ) Entity class with a field annotated with @OneToMany and @JoinTable causes simple id = ? predicate to be transformed into complex (id) in select .. join .... This produces very slow query, not to mention additional db locks. ********* Test case ********* https://github.com/el-dot/hibernate-test-case-redundant-join-in-statement ( https://github.com/el-dot/hibernate-test-case-redundant-join-in-statement ) ------------------ Expected statement ------------------ update Parent set someField=? where id =?` ---------------- Actual statement ---------------- update Parent set someField=? where (id) in (select jpaunittes0_.id as id from Parent jpaunittes0_ left outer join parent_child jpaunittes0_1_ on jpaunittes0_.id=jpaunittes0_1_.id where jpaunittes0_.id=?) ( https://hibernate.atlassian.net/browse/HHH-15467#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-15467#add-comment?atlOrigin=ey... ) 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#100206- sha1:4ed3dc7 )