ass="member-signature"><span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></span>&nbsp;<span class="element-name">columnDefinition</span></div>
<div class="block">(Optional) The SQL fragment that is used when generating
 the DDL for the column. This should not be specified for a
 <a href="OneToOne.html" title="annotation interface in jakarta.persistence"><code>OneToOne<