Oracle建表并加自增序列

Oracle建表并加自增序列

Oracle建表

create table BI_MLK_SEARCHKEYWORD(

    ID NUMBER(30) primary key,
    KEYWORD varchar2(30),
    TIMES NUMBER(30) not null,
    INPUTDATE DATE,
    PINYIN VARCHAR2(50),
    FIRSTPINYIN VARCHAR2(30),
    ENGLISH VARCHAR2(50)

);

Oracle建序列

drop sequence dectuser_tb_seq;
create sequence dectuser_tb_seq minvalue 1 maxvalue 99999999
               increment by 1
               start with 1;   /*步长为1*/
              
给表添加自增序列              
create or replace trigger dectuser_tb_tri
        before insert on BI_MLK_SEARCHKEYWORD     /*触发条件：当向表dectuser执行插入操作时触发此触发器*/
        for each row                       /*对每一行都检测是否触发*/
        begin                                  /*触发器开始*/
               select dectuser_tb_seq.nextval into :new.ID from dual;   /*触发器主题内容，即触发后执行的动作，在此是取得序列dectuser_tb_seq的下一个值插入到表dectuser中的userid字段中*/
        end; 
commit;