從兩個表

Question

有兩個表中檢索數據的SQL查詢，如下

職員表：empid, empname, deptid

部門表：deptid, deptname

然後寫查詢「列表中的所有員工的部門名稱=計算機「

Answer 1

這應該是相當直接的，

SELECT a.empid, a.empname, b.deptname 
FROM employee a 
     INNER JOIN department b 
      ON a.deptid = b.deptid 
ORDER BY b.deptname, a.empname 

• SQLFiddle Demo

爲了進一步獲得更多的知識有關加入，請訪問以下鏈接：

• Visual Representation of SQL Joins

Answer 2

SELECT e.empname, deptname 
FROM employee e 
    INNER JOIN department d 
    ON e.deptid = d.deptid 
GROUP BY emptname, deptname 

Answer 3

SELECT empname, deptname 
from employee, department 
where employee.deptid=department.deptid 
and department.deptname='computer'; 

計算機必須區分敏感PE r你在你的表格中的值