db2学习笔记

a.服务端安装  v11.1_win64_expc.zip 官网下载
b.客户端安装 Toad for DB2 Freeware 6.1 百度找找
.建数据库
create database HRA_GF
.建信道
catalog tcpip node gf remote 192.168.2.252 server
3.1 别名
catalog database HRA_GF as hServer at node gf
3.2 数据库挂在信道上
catalog database HRA_GF at node gf
3.3 terminate 刷新
3.4 db2
.连接数据库
connect to HRA_GF user db2admin using Hhgf2017
.删除节点
uncatalog node gf

. 获取序列下一个值
     select nextval for BAS_MODULE_SEQ  from sysibm.sysdummy1
.创建函数结合序列值获取
    CREATE function BAS_SEQ ()
            RETURNS BIGINT
            LANGUAGE SQL
            CONTAINS SQL
            NO EXTERNAL ACTION
            DETERMINISTIC
            BEGIN ATOMIC
               Declare cd BIGINT;   --时间
           set cd=next value for BAS_MODULE_SEQ;
            RETURN cd;
            END ;