一、查询关键字
1、数据准备
> create table emp( -> id int primary key auto_increment, -> name varchar(20) not null, -> sex enum('male','female') not null default 'male', -> age smallint(3) unsigned not null default 28, -> hire_date date not null, -> post varchar(50), -> post_comment varchar(100), -> salary double(15,2), -> office int, -> depart_id int -> );
插入数据
insert into emp(name,sex,age,hire_date,post,salary,office,depart_id) values ('tom','male',78,'20150302','teacher',1000000.31,401,1),#以下是教学部 ('kevin','male',81,'20130305','teacher',8300,401,1), ('tony','male',73,'20140701','teacher',3500,401,1), ('owen','male',28,'20121101','teacher',2100,401,1), ('jack','female',18,'20110211','teacher',9000,401,1), ('jenny','male',18,'19000301','teacher',30000,401,1), ('sank','male',48,'20101111','teacher',10000,401,1), ('哈哈','female',48,'20150311','sale',3000.13,402,2),#以下是销售部门 ('呵呵','female',38,'20101101','sale',2000.35,402,2), ('西西','female',18,'20110312','sale',1000.37,402,2), ('乐乐','female',18,'20160513','sale',3000.29,402,2), ('拉拉','female',28,'20170127','sale',4000.33,402,2), ('僧龙','male',28,'20160311','operation',10000.13,403,3), #以下是运营部门 ('程咬金','male',18,'19970312','operation',20000,403,3), ('程咬银','female',18,'20130311','operation',19000,403,3), ('程咬铜','male',18,'20150411','operation',18000,403,3), ('程咬铁','female',18,'20140512','operation',17000,403,3);
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