MySQL常用查詢

sudo service mysql start;

mysql -u root;

create databae test;

usetest;
#建立表
create table shop(
article int(4) unsigned zerofill default
'0000' not null,
dealer varchar(20) default
'' not null,
price double(16,2) default
'0.00' not null,
primary key(article, dealer));
);#插入資料
mysql> insert into shop values
-> (1,'a',3.45),(1,'b',3.99),(2,'a',10.99),(3,'b',1.45),
-> (3,'c',1.69),(3,'d',1.25),(4,'d',19.95);

select

max(article) as articlemax from shop;

#顯示price最大值的行

select * from shop where price = (select
max(price) from shop);

#按照**降序排序

select * from shop order
by price desc;
#使用limit 獲取指定行
select * from shop order
by price desc limit 1;

select article, max(price) as

maxfrom shop 
group
by article;

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