Question

我有2个表，EMPLOYEEAPP和EMPLOYEEINFO。

当SECURITYGROUP列为特定值时，我想搜索EMPLOYEEAPP表以查找EMPLOYID。

然后我想从EMPLOYEEAPP表中获取EMPLOYID并使用EMPLOYEEINFO表中的EMPLID列搜索它们对应的名字和姓氏。

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＆＃34; ORA-00933：SQL命令未正确结束＆＃34;。

非常感谢任何帮助或见解！

Answer 1

您的WHERE子句位置错误。查询应为：

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

查询的顺序是：

SELECT
FROM
JOIN
WHERE 
GROUP BY 
HAVING
ORDER BY

将两个表中的列连接成一个

1 个答案: