Where clause apparently failing

Greetings,

I'm running 64-bit Oracle 10.2.0.4.0 EE on Windows server 2003.

The select statement

select patient_id, study_number
from ucdv_cc_summaryae
where study_number = 'UCDCC#128';

returns 8693 rows. Many of these rows have study_number other than ucdcc#128 including ucdcc#157, ucdcc#159, ucdcc#165, ucdcc#171, etc.

ucdv_cc_summaryae is a view and the column study_number is varchar2(100). I am perplexed and would appreciate any thoughts. I am still having difficulty getting to Oracle docs online.

Thanks.

Bill Wagman
Univ. of California at Davis
IET Campus Data Center
wjwagman_at_ucdavis.edu
(530) 754-6208

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