SQL> conn yang/yang as sysdba
已连接。
SQL> select table_name from dba_tables where table_name like 'T_%';---在这里 _ 被当作通配符来处理。
TABLE_NAME
------------------------------
TAB$
TYPE_MISC$
TS$
TSQ$
TYPED_VIEW$
TRUSTED_LIST$
TRIGGER$
TRIGGERCOL$
TRIGGERJAVAF$
TRIGGERJAVAS$
TRIGGERJAVAC$
TABLE_NAME
------------------------------
TRIGGERJAVAM$
TRIGGERDEP$
TSM_SRC$
TSM_DST$
TABLE_PRIVILEGE_MAP
TAB_STATS$
TYPE$
TYPEHIERARCHY$
TABPART$
TABSUBPART$
TABCOMPART$
TABLE_NAME
------------------------------
TRANSACTION_BACKOUT_STATE$
TRANSACTION_BACKOUT_REPORT$
TRANSFORMATIONS$
TOKENSESSIONMAP_T$
T1
T2
TTS_TBS$
TTS_USR$
TTS_ERROR$
已选择31行。
SQL> select table_name from dba_tables where table_name like 'TTS\_%' escape '\';--加上escape后，_ 当作下划线来处理
TABLE_NAME
------------------------------
TTS_ERROR$
TTS_USR$
TTS_TBS$
当需要导出某一类表比如以 test_ 开头的表时 escape 就派上用场了，导出TEST_1 TEST_2 这两个表。
SQL> conn scott/tiger
Connected.
SQL> select * from tab;
TNAME TABTYPE CLUSTERID
------------------------------ ------- ----------
DEPT TABLE
EMP TABLE
BONUS TABLE
SALGRADE TABLE
TEST_1 TABLE
TEST_2 TABLE
TESTA TABLE
TESTB TABLE
SQL> select tname from tab where tname like 'TEST\_%' escape '\';
TNAME
------------------------------
TEST_1
TEST_2
SQL> conn / as sysdba
SQL> create or replace directory dumpdir as 'd:\dump';
SQL> grant read,write on directory dumpdir to scott;
C:\Documents and Settings\Administrator>expdp scott/tiger DIRECTORY=dumpdir DUMPFILE=expdp_scott_test.dmp LOGFILE=expdp_scott_test.log SCHEMAS=scott INCLUDE=TABLE:\"IN \( select tname from tab where tname like 'TESTq_%' escape 'q' \)\"
Export: Release 10.1.0.2.0 - Production on 星期五, 22 10月, 2010 12:45
Copyright (c) 2003, Oracle. All rights reserved.
Connected to: Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production
With the Partitioning, OLAP and Data Mining options
FLASHBACK automatically enabled to preserve database integrity.
Starting "SCOTT"."SYS_EXPORT_SCHEMA_01": scott/******** DIRECTORY=dumpdir DUMPFILE=exp_tab.dmp LOGFILE=exp_tab.log SCHEMAS=scott INCLUDE=TABLE:"IN \( select tn
ame from tab where tname like 'TESTq_%' escape 'q' \)"
Estimate in progress using BLOCKS method...
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
Total estimation using BLOCKS method: 128 KB
Processing object type SCHEMA_EXPORT/TABLE/TABLE
. . exported "SCOTT"."TEST_1" 7.820 KB 14 rows
. . exported "SCOTT"."TEST_2" 7.820 KB 14 rows
Master table "SCOTT"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded
******************************************************************************
Dump file set for SCOTT.SYS_EXPORT_SCHEMA_01 is:
D:\DUMP\EXP_TAB.DMP
Job "SCOTT"."SYS_EXPORT_SCHEMA_01" successfully completed at 12:45
---导出部分的实例来自与puber stanley ！