建表: DEPARTMENTS:DEPARTMENT_ID(primary key),DEPARTMENT_NAME,LOCATIONEMPLOYEES:EMPLOYEE_ID(primary key),EMPLOYEE_NAME,EMPLOYEE_JOB,MANAGER,SALARY,DEPARTMENT_ID 列出EMPLOYEES表中各部门的部门号,最高工资,最低工资 select max(SALARY) as 最高
建表:
DEPARTMENTS: DEPARTMENT_ID(primary key), DEPARTMENT_NAME, LOCATION EMPLOYEES: EMPLOYEE_ID(primary key), EMPLOYEE_NAME, EMPLOYEE_JOB, MANAGER, SALARY, DEPARTMENT_ID
select max(SALARY) as 最高工资,min(SALARY) as 最低工资,DEPARTMENT_ID from EMPLOYEES group by DEPARTMENT_ID;
select max(SALARY) as 最高工资,min(SALARY) as 最低工资,DEPARTMENT_ID as 部门号 from EMPLOYEES where EMPLOYEE_JOB = 'CLERK' group by DEPARTMENT_ID;
select max(SALARY) as 最高工资,min(SALARY) as 最低工资,DEPARTMENT_ID as 部门号 from EMPLOYEES as b where EMPLOYEE_JOB ='CLERK' and 1000>(select min(SALARY) from EMPLOYEES as a where a.DEPARTMENT_ID = b.DEPARTMENT_ID) group by b.DEPARTMENT_ID
select DEPARTMENT_ID as 部门号,EMPLOYEE_NAME as 姓名,SALARY as 工资 from EMPLOYEES order by DEPARTMENT_ID desc,SALARY asc
还没想到,如果你又答案,请联系www.nowamagic.net,我的联系方式在网站首页。
select EMPLOYEE_NAME,DEPARTMENT_ID from EMPLOYEES where DEPARTMENT_ID = (select DEPARTMENT_ID from EMPLOYEES where EMPLOYEE_NAME = '张三')
select EMPLOYEE_NAME,EMPLOYEE_JOB,EMPLOYEES.DEPARTMENT_ID,DEPARTMENTS.DEPARTMENT_NAME from EMPLOYEES,DEPARTMENTS where EMPLOYEES.DEPARTMENT_ID = DEPARTMENTS.DEPARTMENT_ID
select EMPLOYEE_NAME,EMPLOYEE_JOB,DEPARTMENTS.DEPARTMENT_ID,DEPARTMENT_NAME from EMPLOYEES,DEPARTMENTS where DEPARTMENTS.DEPARTMENT_ID = EMPLOYEES.DEPARTMENT_ID and DEPARTMENT_JOB = 'CLERK'
select a.EMPLOYEE_NAME as 姓名,b.EMPLOYEE_NAME as 管理者 from EMPLOYEES as a,EMPLOYEES as b where a.MANAGER is not null and a.MANAGER = b.EMPLOYEE_ID
select DEPARTMENT_NAME as 部门名,DEPARTMENTS.DEPARTMENT_ID as 部门号,EMPLOYEE_NAME as 员工名,EMPLOYEE_JOB as 工作 from DEPARTMENTS,EMPLOYEES where DEPARTMENTS.DEPARTMENT_ID *= EMPLOYEES.DEPARTMENT_ID and EMPLOYEE_JOB = 'CLERK'
select a.DEPARTMENT_ID as 部门号,a.EMPLOYEE_NAME as 姓名,a.SALARY as 工资 from EMPLOYEES as a where a.SALARY>(select avg(SALARY) from EMPLOYEES as b where a.DEPARTMENT_ID = b.DEPARTMENT_ID) order by a.DEPARTMENT_ID
select count(a.SALARY) as 员工数,a.DEPARTMENT_ID as 部门号 from EMPLOYEES as a where a.SALARY>(select avg(SALARY) from EMPLOYEES as b where a.DEPARTMENT_ID = b.DEPARTMENT_ID) group by a.DEPARTMENT_ID order by a.DEPARTMENT_ID
select count(a.EMPLOYEE_ID) as 员工数,a.DEPARTMENT_ID as 部门号,avg(SALARY) as 平均工资 from EMPLOYEES as a where (select count(c.EMPLOYEE_ID) from EMPLOYEES as c where c.DEPARTMENT_ID = a.DEPARTMENT_ID and c.SALARY>(select avg(SALARY) from EMPLOYEES as b where c.DEPARTMENT_ID = b.DEPARTMENT_ID))>1 group by a.DEPARTMENT_ID order by a.DEPARTMENT_ID
select a.DEPARTMENT_ID,a.EMPLOYEE_NAME,a.SALARY,(select count(b.EMPLOYEE_NAME) from EMPLOYEES as b where b.SALARY 5
已抢65934个
抢已抢33064个
抢已抢18499个
抢已抢9100个
抢已抢11912个
抢已抢24930个
抢