使用 inner join
update picture inner join (select iteration+1 as i from picture where pic_id=453) c set labels="56,57,58" , iteration=c.i where pic_id=453;
如上例子：
完成更新 picture.labels 字段 & picture.iteration自增 的两个功能。
使用 inner join
update picture inner join (select iteration+1 as i from picture where pic_id=453) c set labels="56,57,58" , iteration=c.i where pic_id=453;
如上例子：
完成更新 picture.labels 字段 & picture.iteration自增 的两个功能。