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取出来的结果是Id,Id,Id这样规则的string。
再使用charindex()>0就可以取出所有的值。数据库中的字段ID,和parentId.就是父子关系。
0011,001
0012,001
0013,001
0011-1,0011
0011-2,0011
0011-21,0011-2
这样的数据结构就可以取出来。不过字段不能定义成nchar型。