Oracle作业-SQL语句错误-再次

我不确定为什么会出现这个错误，这段代码相当简单。错误是：

ORA-00920:无效的关系运算符

代码是：

SELECT FIRST_NAME || ' ' || LAST_NAME AS "EMPLOYEES"
FROM F_STAFFS
WHERE LAST_NAME LIKE 'D%'
AND LAST_NAME LIKE '%a%' AND '%e%';

我试图在标题为“EMPLOYEES”的列中显示名字和姓氏，姓氏以“D”开头，姓氏包含字母“a”和“e”

谢谢

SELECT FIRST_NAME || ' ' || LAST_NAME AS "EMPLOYEES"
FROM F_STAFFS
WHERE LAST_NAME LIKE 'D%'
AND LAST_NAME LIKE '%a%' AND LAST_NAME LIKE '%e%';

但这可以简化为：

SELECT FIRST_NAME || ' ' || LAST_NAME AS "EMPLOYEES"
FROM F_STAFFS
WHERE LAST_NAME LIKE 'D%a%' AND LAST_NAME LIKE '%e%';

但这可以简化为：

SELECT FIRST_NAME || ' ' || LAST_NAME AS "EMPLOYEES"
FROM F_STAFFS
WHERE LAST_NAME LIKE 'D%a%' AND LAST_NAME LIKE '%e%';

---

“%e%”

不是有效的逻辑表达式

您需要的是：

AND LAST_NAME LIKE '%a%' AND LAST_NAME LIKE '%e%';

---

“%e%”

不是有效的逻辑表达式

您需要的是：

AND LAST_NAME LIKE '%a%' AND LAST_NAME LIKE '%e%';