回答編集履歴
1
調整
test
CHANGED
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@@ -37,3 +37,67 @@
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37
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);
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```
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# 調整
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42
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- KEY1を比較
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45
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- 同じならKEY2を比較
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- 同じならKEY3を比較
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48
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- すべて同じなら１個だけ
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50
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```SQL
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54
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create table tbl(KEY1 varchar(20),KEY2 varchar(10),KEY3 varchar(10));
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56
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insert into tbl values
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58
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('A1191028000001','00002','0'),
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60
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('B1191028000001','00001','1'),
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('B1191028000002','00001','1'),
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('B1191028000003','00002','0'),
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66
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67
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('B1191028000003','00002','1'),
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68
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('C1191028000001','00002','1'),
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('C1191028000002','00001','1'),
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('C1191028000002','00002','0'),
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('D1191028000001','00001','0'),
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('D1191028000001','00001','0');
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select distinct * from tbl as t1
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where not exists
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(select 1 from tbl where
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(substr(KEY1,1,2)=substr(t1.KEY1,1,2) and
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90
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(KEY1>t1.KEY1 or
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KEY1=t1.KEY1 and KEY2>t1.KEY2 or
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KEY1=t1.KEY1 and KEY2=t1.KEY2 and KEY3>t1.KEY3
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)
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)
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100
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101
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);
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102
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103
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```
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