Oracle 实现类似SQL Server中自增字段的一个办法

CREATE SEQUENCE SEQU_DATA_DATAINFO INCREMENT BY 1 START WITH 1 NOCYCLE NOCACHE NOORDER;

create or replace TRIGGER TRIG_TEST 
BEFORE INSERT ON TABLE1 
FOR EACH ROW 
DECLARE 
tmpVar NUMBER; 
BEGIN 
tmpVar := 0; 
Select SEQU_PROC_ASSOCIATEINFO.NextVal into tmpVar from dual; 
:new.procid:=tmpVar; 
EXCEPTION 
WHEN OTHERS THEN 
-- Consider logging the error and then re-raise 
RAISE; 
END;