DB2数据库基础入门.pdf

IBM DB2数据库基础

基本命令集合

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

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2. 连接数据库

connect to sample1 user db2admin using 8301206

3. 建立别名

(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

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

12. 查看表的索引

db2 describe indexes for table user1.department

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

20. kill application

FORCE APPLICATION(0);

db2 force applications all ( 强迫所有应用程序从数据库断开 )

21. lock table

lock table test in exclusive mode

22. 共享 [ 锁]

lock table test in share mode

23. 显示当前用户所有表

list tables

24. 列出所有的系统表

LIST DATABASE DIRECTORY

28. 表空间

list tablespaces

29. 表空间容器

LIST TABLESPACE CONTAINERS FOR Example

: LIST TABLESPACE CONTAINERS FOR 1

30. 显示用户数据库的存取权限

GET AUTHORIZATIONS

32. 停止实例

db2stop

33. 表或视图特权

grant select,delete,insert,update on tables to user

grant all on tables to user WITH GRANT OPTION

TO PUBLIC

grant connect,createtab,dbadm on database to user

37. 索引特权

grant control on index index-name to user

38. 信息帮助 (? XXXnnnnn )

例:? SQL30081