db2常用命令

一、常用命令

  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

  17. 重新连接

  connect reset

  18. 中断数据库连接

  disconnect db2_gcb

  19. view application

  LIST APPLICATION;

  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

  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 tables for system

  25. 显示当前活动数据库

  list active databases

  26. 查看命令选项

  list command options


  27. 系统数据库目录

  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


  31. 启动实例

  DB2START

  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

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