antd的table行key自增长

const columns = [
      {
        title: '序号',
        render:(text,record,index)=>`${index+1}`,
      },
      {
        title:'操作',
        dataIndex:'delete',
        key:'delete',
        render: (text,record) => (
          <span>
            <Link to={{ pathname : '/info/Edit' , query : { id : record.id }}}> 删除</Link>
          </span>
        ),
 
      },
 
    ]