每当我添加这行代码时,它总是抛出异常
OFFSET 0 ROWS
FETCH NEXT 10 ROWS ONLY;
完整代码:
SELECT
EMPLOYEES.EMPLOYEE_ID,
EMPLOYEES.FIRST_NAME, EMPLOYEES.LAST_NAME, EMPLOYEES.EMAIL,
EMPLOYEES.PHONE_NUMBER, EMPLOYEES.HIRE_DATE, EMPLOYEES.JOB_ID,
EMPLOYEES.DEPARTMENT_ID, EMPLOYEES.MANAGER_ID, EMPLOYEES.SALARY,
JOBS.JOB_ID, JOBS.JOB_TITLE, DEPARTMENTS.DEPARTMENT_ID,
DEPARTMENTS.DEPARTMENT_NAME, DEPARTMENTS.MANAGER_ID, M.EMPLOYEE_ID,
M.FIRST_NAME
|| ' '
|| M.LAST_NAME AS MANAGER_NAME
FROM
EMPLOYEES
INNER JOIN
JOBS ON EMPLOYEES.JOB_ID = JOBS.JOB_ID
INNER JOIN
DEPARTMENTS ON EMPLOYEES.DEPARTMENT_ID = DEPARTMENTS.DEPARTMENT_ID
INNER JOIN
EMPLOYEES M ON DEPARTMENTS.MANAGER_ID = M.EMPLOYEE_ID
ORDER BY
EMPLOYEES.EMPLOYEE_ID ASC
我想显示来自我网站中多个表的数据,并将其限制为仅十个输出,但它总是抛出异常。我该怎么办?我尝试添加别名,但没有用。
您的问题的简单答案是:
根据关于FETCH的Oracle 12c文档:
如果选择列表包含具有相同名称的列,并且您 指定row_limiting_clause,则发生 ORA-00918 错误。这 无论同名列是否位于同一列中,都会发生错误 表或在不同的表中。您可以通过以下方式解决此问题 为同名列指定唯一的列别名。
干杯!!
为重复名称指定别名
M.FIRST_NAME as "Manager name"
或者没有as
DEPARTMENTS.DEPARTMENT_ID "Department ID",