db2常用命令(一)

今天有幸把公司产品向db2移植，于是就有了下面的经历。

 

1. 建立数据库DB2_GCB

CREATE DATABASE DB2_GCB ON G: ALIAS DB2_GCB 
USING CODESET GBK TERRITORY CN COLLATE USING SYSTEM DFT_EXTENT_SZ 32 

 

2. 连接数据库 

connect to sample1 user db2admin using 8301206

 
3. 建立别名

create alias db2admin.tables for sysstat.tables; 

CREATE ALIAS DB2ADMIN.VIEWS FOR SYSCAT.VIEWS 

create alias db2admin.columns for syscat.columns;
 
create alias guest.columns for syscat.columns; 

  
4. 建立表

create table zjt_tables as 
(select * from tables) definition only; 
create table zjt_views as 
(select * from views) definition only; 

 

5. 插入记录

insert into zjt_tables select * from tables; 
insert into zjt_views select * from views; 

 
6. 建立视图

create view V_zjt_tables as select tabschema,tabname from zjt_tables; 

 

7. 建立触发器

CREATE TRIGGER zjt_tables_del 
AFTER DELETE ON zjt_tables 
REFERENCING OLD AS O 
FOR EACH ROW MODE DB2SQL 
Insert into zjt_tables1 values(substr(o.tabschema,1,8),substr(o.tabname,1,10)) 

 

8. 建立唯一性索引

CREATE UNIQUE INDEX I_ztables_tabname ON zjt_tables(tabname); 

 

9. 查看表

select tabname from tables  where tabname='ZJT_TABLES'; 

 

10. 查看列 

select SUBSTR(COLNAME,1,20) as 列名,TYPENAME as 类型,LENGTH as 长度 
from columns 
where tabname='ZJT_TABLES';

 
11. 查看表结构

db2 describe table user1.department 
db2 describe select * from user.tables 

 

12. 查看表的索引

db2 describe indexes for table user1.department 

 

13. 查看视图

select viewname from views  where viewname='V_ZJT_TABLES'; 

 

14. 查看索引

select indname from indexes where indname='I_ZTABLES_TABNAME'; 

 

15. 查看存贮过程

SELECT SUBSTR(PROCSCHEMA,1,15),SUBSTR(PROCNAME,1,15) 
FROM SYSCAT.PROCEDURES; 

 

16. 类型转换(cast) 

ip datatype:varchar  select cast(ip as integer)+50 from log_comm_failed