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CREATE TABLE X1 (id NUMBER(5),code VARCHAR2(10));
CREATE TABLE X2 (gh NUMBER(5),id NUMBER(5),code VARCHAR2(10));
CREATE SEQUENCE seq_x2
MINVALUE 1
MAXVALUE 99999
START WITH 1
INCREMENT BY 1
NOCACHE;
SELECT seq_x2.NEXTVAL FROM dual;
SELECT seq_x2.CURRVAL FROM dual;
CREATE OR REPLACE TRIGGER xx1
AFTER INSERT OR DELETE ON x1 FOR EACH ROW
BEGIN
IF INSERTING THEN
INSERT INTO x2(gh,id,code) VALUES (seq_x2.NEXTVAL,:NEW.id,:NEW.code);
END IF;
IF DELETING THEN
INSERT INTO x2(gh,id,code) VALUES (seq_x2.NEXTVAL,:old.id,:old.code);
END IF;
END xx1;
INSERT INTO x1 VALUES (100,'c100');
SELECT * FROM x2;
GH ID CODE
2 100 c100
DELETE FROM X1 WHERE ID=100;
SELECT * FROM x2;
GH ID CODE
2 100 c100
3 100 c100