mysql replace()用法

UPDATE wz_dsj_data SET playerurl= replace(playerurl, '//v1.szjal.cn', '//hls.aoxtv.com/v1.szjal.cn');
UPDATE wz_dsj_data SET playerurl= replace(playerurl, '//v2.szjal.cn', '//hls.aoxtv.com/v2.szjal.cn');
UPDATE wz_dsj_data SET playerurl= replace(playerurl, '//v3.szjal.cn', '//hls.aoxtv.com/v3.szjal.cn');
UPDATE wz_dsj_data SET playerurl= replace(playerurl, '//v4.szjal.cn', '//hls.aoxtv.com/v4.szjal.cn');

REPLACE(str,old_string,new_string);