回答編集履歴
1
調整
test
CHANGED
@@ -1,3 +1,4 @@
|
|
1
|
+
データ作成
|
1
2
|
```SQL
|
2
3
|
create table tbl(ID int primary key,NAME varchar(10),KIND int);
|
3
4
|
insert into tbl values
|
@@ -11,7 +12,16 @@
|
|
11
12
|
(8,'A',1),
|
12
13
|
(9,'A',1);
|
13
14
|
;
|
15
|
+
```
|
16
|
+
要素がID,NAME,KINDしかないなら
|
14
17
|
|
18
|
+
```SQL
|
19
|
+
select min(ID) as ID,NAME,KIND
|
20
|
+
from tbl
|
21
|
+
group by NAME,KIND;
|
22
|
+
```
|
23
|
+
他に要素があるならこんな感じ
|
24
|
+
```SQL
|
15
25
|
select * from tbl as t1
|
16
26
|
where not exists(
|
17
27
|
select 1 from tbl where 1
|
@@ -20,3 +30,5 @@
|
|
20
30
|
and ID<t1.ID
|
21
31
|
);
|
22
32
|
```
|
33
|
+
|
34
|
+
|