將兩個表中的列合併爲一個

Question

我有2個表，EMPLOYEEAPP和EMPLOYEEINFO。

我想在SECURITYGROUP列爲特定值時搜索EMPLOYEEAPP表以查找EMPLOYID。

我想從EMPLOYEEAPP表中獲取EMPLOYID，並使用EMPLOYEEINFO表中的EMPLID列搜索它們對應的名和姓。

SELECT EMPLOYEEAPP.EMPLOYID, EMPLOYEEINFO.FIRST_NAME, EMPLOYEEINFO.LAST_NAME 
FROM EMPLOYEEAPP 
WHERE EMPLOYEEAPP.SECURITYGROUP = 'ANALYST' 
INNER JOIN EMPLOYEEINFO 
ON EMPLOYEEAPP.EMPLOYID=EMPLOYEEINFO.EMPLID 

我一直收到錯誤「ORA-00933：SQL命令未正確結束」。

任何幫助或見解將不勝感激！

Answer 1

你在錯誤的地方有WHERE子句。查詢應該是：

SELECT EMPLOYEEAPP.EMPLOYID, 
    EMPLOYEEINFO.FIRST_NAME, 
    EMPLOYEEINFO.LAST_NAME 
FROM EMPLOYEEAPP 
INNER JOIN EMPLOYEEINFO 
    ON EMPLOYEEAPP.EMPLOYID=EMPLOYEEINFO.EMPLID 
WHERE EMPLOYEEAPP.SECURITYGROUP = 'ANALYST' 

的順序查詢是：

SELECT 
FROM 
JOIN 
WHERE 
GROUP BY 
HAVING 
ORDER BY