tj11:
select cno 商品号,cname 商品名,price 价格
from tb_commodity
where price>=3000
tj12:
select sum(price) total
from tb_commodity
where origim='北京'and cname='电视机'
Python常用OS库之path模块学习
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2024-04-14
tj11:
select cno 商品号,cname 商品名,price 价格
from tb_commodity
where price>=3000
tj12:
select sum(price) total
from tb_commodity
where origim='北京'and cname='电视机'
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