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--建库create database dsdb DEFAULT CHARACTER set utf8 collate utf8_general_ci;/*删除数据库drop DATABASE 数据库名称*/drop DATABASE dsdb; --显示数据库show DATABASES; --切 阅读全文
posted @ 2017-09-13 19:58
TheStar
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create table goods_table( goods_id int(11) not null primary key auto_increment, goods_name varchar(100) not null, goods_price double(8,2) not null, go 阅读全文
posted @ 2017-09-13 19:56
TheStar
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select * from order_user; 条件语句casecase when age<=10 then '儿童' when age>10 and age <=18 then '儿童' when age<=10 then '儿童' when age<=10 then '儿童' else '老 阅读全文
posted @ 2017-09-13 19:39
TheStar
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