Marius K ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=70121%3... ) *commented* on HHH-16216 ( https://hibernate.atlassian.net/browse/HHH-16216?atlOrigin=eyJpIjoiM2Q2N2... ) Re: @Query creates additional not null checks for SybaseASEDialect ( https://hibernate.atlassian.net/browse/HHH-16216?atlOrigin=eyJpIjoiM2Q2N2... ) Hi Jan, thank you for looking into this. I attached a new example based on the hibernate-test-case-templates. hibernate-orm-6.zip ( https://hibernate.atlassian.net/secure/attachment/50228/50228_hibernate-o... ) Using <property name="hibernate.dialect" value="org.hibernate.dialect.H2Dialect"/> or <property name="hibernate.dialect" value="org.hibernate.dialect.SybaseDialect"/> results in Hibernate: select m1_0.MY_USER_ID, m1_0.FIRSTNAME, m1_0.LASTNAME from MY_USER m1_0 where m1_0.FIRSTNAME=? and m1_0.LASTNAME=? which is fine But <property name="hibernate.dialect" value="org.hibernate.dialect.SybaseASEDialect"/> results in Hibernate: select m1_0.MY_USER_ID, m1_0.FIRSTNAME, m1_0.LASTNAME from MY_USER m1_0 where m1_0.FIRSTNAME=? and m1_0.FIRSTNAME is not null and m1_0.LASTNAME=? and m1_0.LASTNAME is not null which has additionall null checks ( 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- sha1:077879e )