Created
June 13, 2012 17:47
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select 氏名, 住所 | |
from 従業員 | |
where 部門番号=1 | |
select 部門名 | |
from 部門 | |
where exists | |
(select 部門番号 | |
from 従業員 | |
where 氏名='山田一郎') | |
select 部門番号, 部門名 | |
from 部門 | |
where exists | |
(select 部門番号 | |
from 従業員 | |
where 年齢<20 | |
) | |
444 | |
555 | |
select 部門番号, 部門名 | |
from 部門 | |
where not exists | |
(select 部門番号 | |
from 従業員 | |
where 年齢<30) | |
----------------------- | |
select count(*) | |
from 従業員 | |
where 部門番号=1 | |
select 部門番号, count(*) | |
from 従業員 | |
group by 部門番号 | |
select 部品番号, max(単価), min(単価), avg(単価) | |
from 供給 | |
group by 部品番号 | |
select 部品番号, 部品名 | |
from 部品 | |
where exists | |
(select 部品番号 | |
from 供給 | |
group by 部品番号 | |
having max(単価)-min(単価)>=100) | |
select 部品番号, max(単価), min(単価), avg(単価) | |
from 供給 | |
where 部門番号=1 | |
group by 部品番号 | |
select max(単価), min(単価), avg(単価) | |
from 供給 | |
where 1=1 |
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