[hibernate-issues] [JIRA] (HHH-15743) Querying with empty parameter list fails

Robert Rittwag ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *commented* on HHH-15743 ( https://hibernate.atlassian.net/browse/HHH-15743?atlOrigin=eyJpIjoiODVkYm... ) Re: Querying with empty parameter list fails ( https://hibernate.atlassian.net/browse/HHH-15743?atlOrigin=eyJpIjoiODVkYm... ) I see 2 problems here: * The coalesce(:departments) works fine, with departments either being null or containing 1 or even 500 elements. With this issue I just want it to behave consistently for an empty list. * Removing the coalesce part while using the empty list param leads to the SQL select u1_0.id,u1_0.id_department,u1_0. name from userr u1_0 where 1=0 and 0 results. That’s not what I intended. I understand that a predicate u.department in () is mathematically false at any time ( 1=0 ). That's why I’m bypassing it's evaluation when the list is empty. A workaround/solution may be to keep the coalesce and pass null instead of an empty list. But in Java it's a good practice to use empty lists instead of null 🙂 . ( https://hibernate.atlassian.net/browse/HHH-15743#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-15743#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#100210- sha1:eab5823 )