更新列附加带有列文本的数字

Question

我想用表格列文本附加数字

Post_sortcode

post-first
post-next
post-next  

输出

Post_sortcode

post-first-1
post-next-2
post-next-3

任何人帮助我......

Answer 1

您需要使用动态变量来获取行号，然后使用join

进行更新

update Post_sortcode t join
(
  select 
  t1.post_id,
  @r := @r+1 as rr
  from Post_sortcode t1,(select @r:=0)r

)u on u.post_id = t.post_id
set t.post = concat(t.post,'-',u.rr);

<强> DEMO

Answer 2

你可以试试这个 -

update tbl_post set post_sortcode=concat(post_sortcode,'-',post_id)