並前往http://g13.baidu.com/s?word=oracle%20count%E5%87%BD%E6%95%B0%E6%80%8E%E4%B9%88%E7%94%A8&sa=brs_1&rq=oracle%20concat%E5%87%BD%E6%95%B0%E7%94%A8%E6%B3%95&rsf=100631101&pqid=9988077311310778335&rqid=9988077311310778335¶ms_ssrt=node-san