SQL> DESC EMP_TEST;
Name Type Nullable Default Comments
-------- ------------ -------- ------- --------
EMPNO NUMBER(4) Y
ENAME VARCHAR2(10) Y
JOB VARCHAR2(9) Y
MGR NUMBER(4) Y
HIREDATE DATE Y
SAL NUMBER(7,2) Y
COMM NUMBER(7,2) Y
DEPTNO NUMBER(2) Y
SQL> SELECT * FROM EMP_TEST;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
----- ---------- --------- ----- ----------- --------- --------- ------
7369 SMITH CLERK 7902 1980-12-17 800.00 20
Executed in 0.016 seconds
-- package 代码:
CREATE OR REPLACE PACKAGE SCOTT.PKG_TRIGGER_TEST IS
TYPE T_EMP IS TABLE OF SCOTT.EMP_TEST%ROWTYPE INDEX BY BINARY_INTEGER;
V_EMPS T_EMP;
V_NUM BINARY_INTEGER := 0;
END ;
-- 行级触发器得发NEW值:
CREATE OR REPLACE TRIGGER SCOTT.GET_EMP_ROW
AFTER INSERT ON SCOTT.EMP_TEST
FOR EACH ROW
BEGIN
DBMS_OUTPUT.PUT_LINE('-- TRIGGER SCOTT.GET_EMP_ROW START --');
SCOTT.PKG_TRIGGER_TEST.V_NUM := SCOTT.PKG_TRIGGER_TEST.V_NUM + 1;
SCOTT.PKG_TRIGGER_TEST.V_EMPS(SCOTT.PKG_TRIGGER_TEST.V_NUM).EMPNO := :NEW.EMPNO;
SCOTT.PKG_TRIGGER_TEST.V_EMPS(SCOTT.PKG_TRIGGER_TEST.V_NUM).ENAME := :NEW.ENAME;
SCOTT.PKG_TRIGGER_TEST.V_EMPS(SCOTT.PKG_TRIGGER_TEST.V_NUM).JOB := :NEW.JOB;
SCOTT.PKG_TRIGGER_TEST.V_EMPS(SCOTT.PKG_TRIGGER_TEST.V_NUM).MGR := :NEW.MGR;
SCOTT.PKG_TRIGGER_TEST.V_EMPS(SCOTT.PKG_TRIGGER_TEST.V_NUM).HIREDATE := :NEW.HIREDATE;
SCOTT.PKG_TRIGGER_TEST.V_EMPS(SCOTT.PKG_TRIGGER_TEST.V_NUM).SAL := :NEW.SAL;
SCOTT.PKG_TRIGGER_TEST.V_EMPS(SCOTT.PKG_TRIGGER_TEST.V_NUM).COMM := :NEW.COMM;
SCOTT.PKG_TRIGGER_TEST.V_EMPS(SCOTT.PKG_TRIGGER_TEST.V_NUM).DEPTNO := :NEW.DEPTNO;
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE(SQLCODE||' : '||SQLERRM);
END GET_EMP_ROW;
-- 表级触发器得到最大工资等Operation:
CREATE OR REPLACE TRIGGER SCOTT.TIA_T_RESULT_HEAD
AFTER INSERT ON SCOTT.EMP_TEST
DECLARE
-- local variables here
V_EMP_NO NUMBER;
V_MANAGER_NO NUMBER;
V_EMP_DATE DATE;
V_DEPT_NO NUMBER;
V_MAX_SALARY SCOTT.EMP_TEST.SAL%TYPE;
V_STEP VARCHAR2(100) := '';
BEGIN
DBMS_OUTPUT.PUT_LINE('-- TRIGGER SCOTT.TIA_T_RESULT_HEAD START --');
V_STEP := 'GET NEW VALUES';
FOR I IN 1..SCOTT.PKG_TRIGGER_TEST.V_EMPS.COUNT LOOP
V_EMP_NO := SCOTT.PKG_TRIGGER_TEST.V_EMPS(I).EMPNO;
V_MANAGER_NO := SCOTT.PKG_TRIGGER_TEST.V_EMPS(I).MGR;
V_EMP_DATE := SCOTT.PKG_TRIGGER_TEST.V_EMPS(I).HIREDATE;
V_DEPT_NO := SCOTT.PKG_TRIGGER_TEST.V_EMPS(I).DEPTNO;
DBMS_OUTPUT.PUT_LINE('EMP_NO: '||V_EMP_NO||' MANAGER_NO: '||V_MANAGER_NO||' EMP_DATE: '||V_EMP_DATE||' DEPT_NO: '||V_DEPT_NO);
V_STEP := 'GET MAX SALARY';
SELECT NVL(MAX(SAL),0)
INTO V_MAX_SALARY
FROM SCOTT.EMP_TEST
WHERE DEPTNO = V_DEPT_NO;
V_STEP := 'PRINT MAX SALARY AFTER INSERTED RECORDS';
DBMS_OUTPUT.PUT_LINE('MAX SALARY: '||V_MAX_SALARY);
DBMS_OUTPUT.PUT_LINE('');
END LOOP;
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('Error at : '||V_STEP);
DBMS_OUTPUT.PUT_LINE(SQLCODE||' : '||SQLERRM);
END TIA_T_RESULT_HEAD;
-- 测试结果:
SQL> INSERT INTO SCOTT.EMP_TEST
2 SELECT 7768,'MANTISXF','SALESER',7369,SYSDATE,3000,NULL,30 FROM DUAL
3 UNION ALL
4 SELECT 7780,'FENG','MONTIORER',7368,SYSDATE,5000,NULL,20 FROM DUAL
5 ;
-- TRIGGER SCOTT.GET_EMP_ROW START --
-- TRIGGER SCOTT.GET_EMP_ROW START --
-- TRIGGER SCOTT.TIA_T_RESULT_HEAD START --
EMP_NO: 7768 MANAGER_NO: 7369 EMP_DATE: 28-9月 -08 DEPT_NO: 30
MAX SALARY: 3000
EMP_NO: 7780 MANAGER_NO: 7368 EMP_DATE: 28-9月 -08 DEPT_NO: 20
MAX SALARY: 5000
2 rows inserted
Executed in 0.25 seconds
SQL> COMMIT;
Commit complete
Executed in 0 seconds
SQL> SELECT * FROM EMP_TEST;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
----- ---------- --------- ----- ----------- --------- --------- ------
7369 SMITH CLERK 7902 1980-12-17 800.00 20
7768 MANTISXF SALESER 7369 2008-9-28 1 3000.00 30
7780 FENG MONTIORER 7368 2008-9-28 1 5000.00 20
Executed in 0.031 seconds
SQL> INSERT INTO SCOTT.EMP_TEST VALUES(8866,'优快云','MANAGER',7369,SYSDATE,8000,NULL,10);
-- TRIGGER SCOTT.GET_EMP_ROW START --
-- TRIGGER SCOTT.TIA_T_RESULT_HEAD START --
EMP_NO: 7768 MANAGER_NO: 7369 EMP_DATE: 28-9月 -08 DEPT_NO: 30
MAX SALARY: 3000
EMP_NO: 7780 MANAGER_NO: 7368 EMP_DATE: 28-9月 -08 DEPT_NO: 20
MAX SALARY: 5000
EMP_NO: 8866 MANAGER_NO: 7369 EMP_DATE: 28-9月 -08 DEPT_NO: 10
MAX SALARY: 8000
1 row inserted
Executed in 0.015 seconds
SQL> COMMIT;
Commit complete
Executed in 0.015 seconds
SQL> SELECT * FROM EMP_TEST;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
----- ---------- --------- ----- ----------- --------- --------- ------
7369 SMITH CLERK 7902 1980-12-17 800.00 20
7768 MANTISXF SALESER 7369 2008-9-28 1 3000.00 30
7780 FENG MONTIORER 7368 2008-9-28 1 5000.00 20
8866 优快云 MANAGER 7369 2008-9-28 1 8000.00 10
Executed in 0.015 seconds