将随机数据插入具有外键的表中

Question

我有一个表"用户"( ,idUser,name)departmentId和另一个表"部门"( ,).idDepartmentname

我想将随机数据插入表中User,但是有必要仅考虑先前插入的部门.

我想它会是这样的:

INSERT INTO User (idUser, name, departmentId)
VALUES (seq_user.nextVal, 'random name', FK_RANDOM_DEPARTMENT);

如何生成此"随机名称"并仅使用我已插入的部门？

提前致谢!

Answer 1

INSERT INTO User 
(idUser, name, departmentId)
VALUES 
(seq_user.nextVal,
 DBMS_RANDOM.STRING('L', 20), /*20 is a number of characters in a string*/
 (SELECT * FROM (SELECT idDepartment FROM Department ORDER BY DBMS_RANDOM.VALUE) WHERE ROWNUM = 1)
);