Marius K ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=70121%3... ) *commented* on HHH-16216 ( https://hibernate.atlassian.net/browse/HHH-16216?atlOrigin=eyJpIjoiODRkZm... ) Re: @Query creates additional not null checks for SybaseASEDialect ( https://hibernate.atlassian.net/browse/HHH-16216?atlOrigin=eyJpIjoiODRkZm... ) unfortunately I am not able to set this to true in our database. As far as I understand ansinull : If set to true one has to use is not null. If set to false one can use is not null or != null. Example (1 row affected) id          i           c     ----------- ----------- -----            1           1 NULL  id          i           c     ----------- ----------- -----            1           1 NULL  (1 row affected) id          i           c     ----------- ----------- -----            1           1 NULL  (1 row affected) > set ansinull on; id          i           c     ----------- ----------- ----- (0 rows affected) id          i           c     ----------- ----------- -----            1           1 NULL  So I understand that the SybaseASEDialect converts the HQL to is not null or != null depending on ansinull. But why does it add ADDITIONAL null checks when the parameter is false? How can I write “select * from table where column = null” with ansinull=false in HQL? ( https://hibernate.atlassian.net/browse/HHH-16216#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16216#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#100217- sha1:65be9f2 )