The newly introduced service JdbcParameterRenderer allows to replace the syntax used by the rendered SQL to defined parameters in https://hibernate.atlassian.net/browse/HHH-16229 .

As we tried to use this in Hibernate Reactive (the vert.x drivers don’t support the JDBC standard parameters syntax) we noticed the new feature seems to apply only to SELECT statement;

DELETE and INSERT statements seem to use the JDBC standard syntax; I haven’t tested UPDATE statements.