LRM-00116: ')' followed by 'yyyy-mm-dd' FOR ORACLE 11G EXPDP

For Oracle11G EXPDP
应要求到某个表的某个月之间的数据
EXPDP HELP=Y
QUERY
Predicate clause used to export a subset of a table.
For example, QUERY=employees:"WHERE department_id > 10".

于是 expdp shark/2013 directory=dir_dp dumpfile =traderecord.dmp query=traderecord:"where tr_datetime >= to_date('2014-03-01','yyyy-mm-dd') and tr_datetime < to_date('2014-04-01','yyyy-mm-dd')"
LRM-00116: syntax error at ')' following 'yyyy-mm-dd'

于是要加转移符号
]expdp shark/2013 directory=dir_dp dumpfile =traderecord.dmp query=traderecord:\"where tr_datetime \>= to_date\(\'2014-03-01\'\,\'yyyy-mm-dd\'\) and tr_datetime \< to_date\(\'2014-04-01\',\'yyyy-mm-dd\'\)\"

Export: Release 11.2.0.1.0 - Production on Tue Apr 1 14:30:47 2014
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.

Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Starting "CCPS"."SYS_EXPORT_SCHEMA_01": shark/******** directory=dir_dp dumpfile=traderecord.dmp query=traderecord:"where tr_datetime >= to_date('2014-03-01','yyyy-mm-dd') and tr_datetime < to_date('2014-04-01','yyyy-mm-dd')"
Estimate in progress using BLOCKS method...
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
Total estimation using BLOCKS method: 10.92 GB

不是吧 转移那么多!!