DB2创建视图并授权给其他用户

创建视图并授权给其他用户

可以在操作系统界面、或者DB2交互界面下进行数据库操作

查看数据库节点
[db2inst1@ELONEHR-DB ~]$ db2 list db directory

System Database Directory

Number of entries in the directory = 1

Database 1 entry:

Database alias = ELONEHR
Database name = ELONEHR
Local database directory = /hehrdta
Database release level = d.00
Comment =
Directory entry type = Indirect
Catalog database partition number = 0
Alternate server hostname =
Alternate server port number =

[db2inst1@ELONEHR-DB ~]$ db2
(c) Copyright IBM Corporation 1993,2007
Command Line Processor for DB2 Client 9.7.7

You can issue database manager commands and SQL statements from the command
prompt. For example:
db2 => connect to sample
db2 => bind sample.bnd

For general help, type: ?.
For command help, type: ? command, where command can be
the first few keywords of a database manager command. For example:
? CATALOG DATABASE for help on the CATALOG DATABASE command
? CATALOG for help on all of the CATALOG commands.

To exit db2 interactive mode, type QUIT at the command prompt. Outside
interactive mode, all commands must be prefixed with 'db2'.
To list the current command option settings, type LIST COMMAND OPTIONS.

For more detailed help, refer to the Online Reference Manual.

db2 => connect to ELONEHR

Database Connection Information

Database server = DB2/LINUXX8664 9.7.7
SQL authorization ID = DB2INST1
Local database alias = ELONEHR
数据库有哪些schema
db2 => select name from sysibm.sysschemata

NAME
---------------------------------------------------------
DB2INST1
EHRREAD
NULLID
ORA
SQLJ
SYSCAT
SYSFUN
SYSIBM
SYSIBMADM
SYSIBMINTERNAL
SYSIBMTS
SYSPROC
SYSPUBLIC
SYSSTAT
SYSTOOLS
ELONEHR

16 record(s) selected.
创建视图
db2 =>create view ELONEHR.V_TB_INF_EMPLOYEE_PART as select * from ELONEHR.TB_INF_EMPLOYEE_PART

查询视图
db2 =>select tabschema||tabname from syscat.tables where TYPE = 'V' and tabname='V_TB_INF_EMPLOYEE_PART'

将ELONEHR的视图V_TB_INF_EMPLOYEE_PART赋权给EHRREAD
db2 => GRANT SELECT ON ELONEHR.V_TB_INF_EMPLOYEE_PART TO USER EHRREAD
DB20000I The SQL command completed successfully.

查询数据库表结构
db2 =>describe table tbname
db2 => describe table syscat.tabauth

查看数据库用户权限
db2 => select TABSCHEMA,TABNAME,SELECTAUTH from syscat.tabauth where GRANTEE='EHRREAD' and TABNAME='V_TB_INF_EMPLOYEE_PART'

特权信息存储在七个系统编目视图中：

SYSCAT.DBAUTH 数据库特权
SYSCAT.COLAUTH 表和视图列特权
SYSCAT.INDEXAUTH 索引特权
SYSCAT.PACKAGEAUTH 包特权
SYSCAT.SCHEMAAUTH 模式特权
SYSCAT.TABAUTH 表和视图特权
SYSCAT.TBSPACEAUTH 表空间特权