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SQL CREATING A TABLE / SEQUENCE / TRIGGER

admin 2016.04.28 13:34 Views : 180

* CREATING A TABLE  *
CREATE TABLE  "CATEGORY_T"
   (    "CA_ID" NUMBER NOT NULL ENABLE,
    "CA_NAME" VARCHAR2(50),
    "LAST_MODIFIED_ON" DATE,
    "LAST_MODIFIED_BY" VARCHAR2(30),
     CONSTRAINT "CATEGORY_PK" PRIMARY KEY ("CA_ID") ENABLE
   )
/

* CREATING SEQUENCE *
 CREATE SEQUENCE   "CATEGORY_SEQ"  MINVALUE 1 MAXVALUE 999999999999999999999999999 INCREMENT BY 1 START WITH 100 CACHE 20 NOORDER  NOCYCLE
/

* CREATING TRIGGER *
CREATE OR REPLACE TRIGGER  "INSERT_CATEGORY"
BEFORE INSERT ON CATEGORY_T
FOR EACH ROW
DECLARE
  CA_id_sv number;
BEGIN
  IF INSERTING THEN
 
  :New.LAST_MODIFIED_ON:= SYSDATE;
  :New.LAST_MODIFIED_BY:= V('APP_USER');

  SELECT CATEGORY_SEQ.nextval
    INTO CA_id_sv
    FROM dual;
  :new.CA_ID := CA_id_sv;

  ELSIF UPDATING THEN

  :New.LAST_MODIFIED_ON:= SYSDATE;
  :New.LAST_MODIFIED_BY:= V('APP_USER');

END IF;
 
End;
/
 
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