CODEWITHSUNDEEP
jpaspring-data-jpajpa-2.1
Mohsen
Mohsen

Reputation: 489

Sub-Query in Spring Data Jpa

I have query like this in jpql 

select new com.example.CustomGroup(m.id, m.title, (select count(w.id) from MessageGroup x join x.messages w where w.readers.id <> ?1) ) 
from MessageGroup m join m.members u where u.id = ?1

but not work, i know jpa 2 support sub query in select but cant find any refrence to how use it

Upvotes: 2

Views: 2544

Answers (1)

JB Nizet
JB Nizet

Reputation: 692181

Quote from the JPA 2.2 specification, paragraph 4.6.16:

Subqueries may be used in the WHERE or HAVING clause.[66]

[66] Subqueries are restricted to the WHERE and HAVING clauses in this release. Support for subqueries in the FROM clause will be considered in a later release of this specification.

Upvotes: 1

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