日期:2014-05-16  浏览次数:20690 次

mysql产生行号

mysql产生行号:

set @n = 0;
update tbl_material_stone a, (select stone_id,@n:=@n+1  r from tbl_material_stone order by stone_id) b  set no = r where a.stone_id =b.stone_id;

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