编写SQL语句实现以下的操作 求帮忙!!!
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发布时间:2022-05-01 15:34
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热心网友
时间:2023-04-27 22:16
select 监测地名,空气质量 from planetDist
select 监测地名,空气质量 from planetDist where 卫星='04' order by 空气质量
select 卫星编号,卫星名称 from planetDist group by 卫星编号,卫星名称 having count(*)>1
select 监测地名,空气质量 from planetDist where 卫星='01' or 卫星='03'
select a as 区域编号,b as 检测地名,c as 空气质量,d as 卫星编号 from planetDist
select 城市名称 from (select 城市名称,rownum from planetDist order by pressure desc )where rownum in ('1','2','3')
select * from planetDist where 空气质量 between '60' and '69'
select * from planetDist where 检测地名=''
select 卫星名称 from planetDist where 检测地名='深圳'
你看看行不
热心网友
时间:2023-04-27 22:16
太多了,不给加分不做追问我就25分了 都给你