将两个表中的列合并为一个

Question

我有2个表，EMPLOYEEAPP和EMPLOYEEINFO。

我想在SECURITYGROUP列为特定值时搜索EMPLOYEEAPP表以查找EMPLOYID。

我想从EMPLOYEEAPP表中获取EMPLOYID，并使用EMPLOYEEINFO表中的EMPLID列搜索它们对应的名和姓。

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

我一直收到错误“ORA-00933：SQL命令未正确结束”。

任何帮助或见解将不胜感激！

Answer 1

你在错误的地方有WHERE子句。查询应该是：

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

的顺序查询是：

SELECT 
FROM 
JOIN 
WHERE 
GROUP BY 
HAVING 
ORDER BY