@Override
    public void clear() {
        super.clear();
        sqlSelect.toNull();
    }
Used to generate nested sql
<p>Therefore sqlSelect does not pass down</p>
chat2db-server/chat2db-server-tools/chat2db-server-tools-common/src/main/java/ai/chat2db/server/tools/common/model/EasyLambdaQueryWrapper.java