jpa eclipselink subquery in from clause

问题

I read here https://wiki.eclipse.org/EclipseLink/UserGuide/JPA/Basic_JPA_Development/Querying/JPQL#Sub-selects_in_FROM_clause

that eclipselink support subquery in from clause

but when i'm using this query

queryString2="SELECT NEW dz.com.naftal.erp.domain.view.MouvementProduitView('VAR',t.cds,SUM(t.mntttc)) " +
             "FROM (SELECT DISTINCT m.mouvementProduitViewPK.cds as cds,m.mouvementProduitViewPK.referenceDocument,m.mouvementProduitViewPK.typeDocument " +
             "m.mntttc as mntttc FROM MouvementProduitView m WHERE m.mouvementProduitViewPK.cds IN :cdss " +
             "AND m.mouvementProduitViewPK.typeDocument IN :typeDocuments " +
             "AND m.dateOperation BETWEEN :dateDu AND :dateAu GROUP BY m.mouvementProduitViewPK.cds ORDER BY m.mouvementProduitViewPK.cds) AS t GROUP BY t.cds"

I'm getting this error

SEVERE [global]
Local Exception Stack: 
Exception [EclipseLink-0] (Eclipse Persistence Services - 2.5.0.v20130507-3faac2b): org.eclipse.persistence.exceptions.JPQLException
Exception Description: Syntax error parsing [SELECT NEW.............. 
[388, 388] The right parenthesis is missing from the sub-expression.
[389, 389] An identification variable must be provided for a range variable declaration.
[426, 447] The query contains a malformed ending.

does any buddy knows if the subquery in from clause is actually working, and if No is there any other way to do this unless using native query.

PS: I m using eclipselink 2.5.0.v20130507

回答1:

Your error is simple: Your query is malformed, is missing a comma in the select distinct... you have:

SELECT DISTINCT 
    m.mouvementProduitViewPK.cds as cds,
    m.mouvementProduitViewPK.referenceDocument,
    m.mouvementProduitViewPK.typeDocument //Here is missing the comma
    m.mntttc as mntttc 
FROM MouvementProduitView m

Between the third and fourth line is missing the comma, it should be:

SELECT DISTINCT 
    m.mouvementProduitViewPK.cds as cds,
    m.mouvementProduitViewPK.referenceDocument,
    m.mouvementProduitViewPK.typeDocument, //put at the end of this line the comma
    m.mntttc as mntttc 
FROM MouvementProduitView m

回答2:

Try removing the 'AS' string after the subquery. The article you presented does not use this construction.

来源：https://stackoverflow.com/questions/34530464/jpa-eclipselink-subquery-in-from-clause

标签

jpa

subquery

eclipselink