Question

Student table : student ID, student name, student contact
Evaluation: EvalID, Eval number

学生从1-7开始评估每节课。我需要创建一个复制学生信息的触发器，如果他们评估7，他们会给另一个表格进行评估

我所做的是

Create or replace trigger test
After Insert on evaluation
when (eval_number = 0)
Begin

我不知道该怎么办......任何想法？并且我的第一个触发器是正确的吗？

Answer 1

下表：

CREATE TABLE student(
studentId INTEGER,
student_name varchar2(100),
student_contact varchar2(100));

CREATE TABLE evaluation(
evalId  INTEGER,
eval_num INTEGER,
student_id INTEGER)

create table eval_audit(
studentId INTEGER,
student_name VARCHAR2(100),
student_contact VARCHAR2(100),
eval_num INTEGER)

在使用7进行评估时触发从学生插入数据：

CREATE OR REPLACE TRIGGER AIEvaludation
AFTER INSERT ON evaluation
FOR EACH ROW
WHEN (new.eval_num = 7)
DECLARE
    CURSOR curStudent IS
        SELECT studentid, student_name, student_contact
          FROM student
         WHERE studentid = :new.student_id;
    --
    vRowStudent curStudent%ROWTYPE;
BEGIN
    OPEN curStudent;
    FETCH curStudent INTO vRowStudent;
    CLOSE curStudent;
    INSERT INTO eval_audit
    (studentid, student_name, student_contact, eval_num)
    VALUES (vRowStudent.studentid, vRowStudent.student_name, vRowStudent.student_contact, :new.eval_num);
END AIEvaludation;

Oracle触发器将数据从一个表复制到另一个表

1 个答案: