public TeradataQuery<T> qualify(Predicate predicate) {
        predicate = ExpressionUtils.predicate(SQLOps.QUALIFY, predicate);
        return queryMixin.addFlag(new QueryFlag(QueryFlag.Position.BEFORE_ORDER, predicate));
    }
Adds a qualify expression

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