数据库|mysql教程
oracle触发器,Oracle sequence,Orac
数据库-mysql教程
微信公众平台源码c,vscode文件名称限制,制作基于ubuntu,tomcat hs_err,高德 爬虫,php 异步调用方法,舟山谷歌seo网络营销,模版网站跟目录在什么地方lzw
Oracle利用触发器和sequence实现主键自增长 建立表 — Create tablecreate table GEO_BOOKMARK( F_ID NUMBER not null, F_NAME V
免费前端源码下载,ubuntu跟kali区别,tomcat不配环境变量会,电热膜 爬虫,php网站新页面打不开,德州seo价格lzw
DM码 源码,Ubuntu上使用weka,上海勃利爬虫防治,Sajax php,SEO新手基础lzw
Oracle利用触发器和sequence实现主键自增长
建立表
— Create table
create table GEO_BOOKMARK
(
F_ID NUMBER not null,
F_NAME VARCHAR2(100) not null,
F_REMARK VARCHAR2(200),
F_XMIN NUMBER not null,
F_YMIN NUMBER not null,
F_XMAX NUMBER not null,
F_YMAX NUMBER not null,
F_LEVEL NUMBER not null,
F_LAYERIDS VARCHAR2(50)
)
tablespace PRJZC927
pctfree 10
initrans 1
maxtrans 255;
— Create/Recreate primary, unique and foreign key constraints
alter table GEO_BOOKMARK
add constraint F_PKID primary key (F_ID)
using index
tablespace PRJZC927
pctfree 10
initrans 2
maxtrans 255;
建立Sequence
— Create sequence
create sequence SEQ_GEO_BOOKMARK
minvalue 1
maxvalue 9999999999999
start with 1
increment by 1
cache 20
order;
建立触发器
create or replace trigger trg_geo_bookmark_id
before insert on geo_bookmark
for each row
begin
SELECT seq_geo_bookmark.nextval INTO :new.f_id FROM dual;
end;
，
