Felix Janssen ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=712020%... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiMjE0MGJjZGQ1... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-16521?atlOrigin=eyJpIjoiMjE0MG... ) HHH-16521 ( https://hibernate.atlassian.net/browse/HHH-16521?atlOrigin=eyJpIjoiMjE0MG... ) Regression with target type in CAST function ( https://hibernate.atlassian.net/browse/HHH-16521?atlOrigin=eyJpIjoiMjE0MG... ) Issue Type: Bug Affects Versions: 6.0.0 Assignee: Unassigned Components: hibernate-core Created: 26/Apr/2023 04:50 AM Priority: Major Reporter: Felix Janssen ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=712020%... ) When writing a HQL query with a CAST function to a nationalizes string, there is different behavior between Hibernate 5 and Hibernate 6, with property hibernate.use_nationalized_character_data set to true. HQL: [...] CAST ( name AS nstring) [...] Oracle SQL (Hibernate 5) [...] CAST ( name AS nvarchar2(4000)) [...] Oracle SQL (Hibernate 6) [...] CAST ( name AS varchar2 (4000)) [...] So in Hibernate 5, cast to nstring would produce the nationalized type nvarchar2(4000) and in Hibernate 6, it will produce the non-nationalized type varchar2(4000). I would expect a cast to nstring to produce a cast to nvarchar2(4000) in (Oracle) SQL, just like in Hibernate 5. *Cause* In BaseSqmToSqlAstConverter , there is a method visitCastTarget that decides on the SQL type for the cast. It uses InferredBasicValueResolver.resolveSqlTypeIndicators with an nstring as 'resolved'. This causes the code path to eventually jump to NVarcharJdbcType.resolveIndicatedType , which will produce Types.VARCHAR , because indicators.isNationalized() returns false. indicators here is a StandardSqmTranslator , which doesn't provide an overridden method for isNationalized. ( https://hibernate.atlassian.net/browse/HHH-16521#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16521#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#100223- sha1:038ca59 )