我想使用当前日期函数比较jpql查询中的两个日期
我有个错误
语法错误解析[SELECT d From Dossier d WHERE d. debid=1 AND d.typeDossier=：tpd AND d.dateCreation
这是我的查询：
public List<Dossier> getDossierFindAllParDepartementDBTECHandUrgen() {
return (List<Dossier>) em.createQuery("SELECT d FROM Dossier d WHERE d.depid=1 AND d.typeDossier = :tpd AND " +
"d.dateCreation < CURRENT_TIMESTAMP() + 5",
Dossier.class).setParameter("tpd", "Urgent").getResultList();
}
JPA支持函数CURRENT_TIMESTAMP
https://en.wikibooks.org/wiki/Java_Persistence/JPQL#Functions
但不适用于算术运算。您可以通过使用参数来解决问题，例如
TypedQuery<Dossier> query = em.createQuery("SELECT d FROM Dossier d WHERE d.depid=1 AND d.typeDossier = :tpd AND " +
"d.dateCreation < :fiveDaysAhead",
Dossier.class);
Date myFiveDaysAhead = new Date(Calendar.getInstance().add(Calendar.DAYS_OF_YEAR,5).getTimeInMillis());//or something
query.setParameter("tpd", "Urgent");
query.setParameter("fiveDaysAhead", myFiveDaysAhead, TemporalType.TIMESTAMP);
正如我在另一个答案中注意到的那样，也可能找到供应商特定的解决方案https://stackoverflow.com/a/18514326/2835455
