回答編集履歴
1
参考
test
CHANGED
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@@ -1,3 +1,31 @@
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1
1
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見た感じ、なにかのランク付けじゃないですか？
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2
2
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3
3
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id順に連番をつけているとか？
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4
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+
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5
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+
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6
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+
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7
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# sample
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8
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+
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9
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```SQL
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10
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+
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11
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create table tbl(id int not null unique,val int);
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12
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+
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13
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insert into tbl values(5,1),(7,2),(3,3),(1,4),(8,5);
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14
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15
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```
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16
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+
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17
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18
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19
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```SQL
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20
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21
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select (select count(*)+1 from tbl as t2 where t2.id<t1.id) as rank,id,val
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22
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23
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from tbl as t1 order by rank;
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24
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25
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26
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27
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```
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28
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+
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29
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+
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30
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+
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31
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+
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