@Override
    public TeradataQuery<T> clone(Connection conn) {
        TeradataQuery<T> q = new TeradataQuery<T>(conn, getConfiguration(), getMetadata().clone());
        q.clone(this);
        return q;
    }
Adds a qualify expression

@param predicate qualify expression
@return the current object
querydsl-sql/src/main/java/com/querydsl/sql/teradata/TeradataQuery.java