datastax手册说我可以用“usingconsistency”语法更改一致性级别。http://www.datastax.com/docs/1.1/references/cql/cql_data_types#specifying-一致性级别
但是，cassandra cqlsh报告了使用一致性的错误请求。

cqlsh:db_simple> show version
[cqlsh 2.3.0 | Cassandra 1.2.3 | CQL spec 3.0.0 | Thrift protocol 19.35.0]

cqlsh:db_simple> SELECT * FROM test WHERE a=1;

 a | b  
---+---------
 1 | example

cqlsh:db_simple> SELECT * FROM test USING CONSISTENCY ONE WHERE a=1;
Bad Request: line 1:19 missing EOF at 'USING'

我错过了什么？谢谢。