MySQL自动生成序号列

select (@i:=@i+1) i,a.CITYID from basis_cityinfo a ,(select @i:=0) t2 order by a.id desc limit 220;select (@i:=@i+1) i,a.CITYID from basis_cityinfo a ,(select @i:=0) t2 order by a.id desc limit 220; 转

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