ORA-32488: WITH clause element did not have a column alias list
Cause: A WITH clause element used the SEARCH clause or CYCLE clause or both but did not have a column alias list specified for it.
Action: Add a column alias list for the WITH clause query name.
ORA-32488意味着WITH句子的某一元素没有带上列的别名列表,这样一来,SQL语句无法被正确处理。
例1:假设我们有以下关系:
EMPLOYEE(EMP_ID,EMP_NAME,EMP_DEPT)
DEPARTMENT(DEPT_ID,DEPT_NAME)
同时,我们想运行以下查询:
SELECT DEPT_ID, DEPT_NAME
FROM (
SELECT EMP_DEPT, EMP_NAME
FROM EMPLOYEE
)w
这种查询将导致ORA-32488错误,因为WITH语句未提供列的别名列表。
要解决ORA-32488错误,只需使用WITH子句中的列别名列表即可。在上面的例子中,我们可以这样修改查询:
SELECT DEPT_ID, DEPT_NAME
FROM (
SELECT EMP_DEPT, EMP_NAME AS DEPT_NAME
FROM EMPLOYEE
)w