Sql for extract file path without file_name form the folumn value

Question

Dear Experts,
can someone give the sql script to extract file path without file_name form the folumn value.
can someome provide sql to extract only path in the column value.
column value :
/data/rrsapus/oradata22/rrsa_25122011rpsp_arpch.rsp
i need output like this */data/rrsapus/oradata22/*

Answer 1

Hi,
Welcome to the forum!
INSTR and SUBSTR is probably the most efficient way. Use INSTR to find where the last '/' is, and SUBSTR to get that many characters, starting from the beginning of the string.
INSTR and SUBSTR (and REGEXP_SUBSTR, and REGEXP_REPLACE, and RTRIM, and REPLACE, and all the other bullt-in functions) are documented in the SQL language manual:
http://docs.oracle.com/cd/B28359_01/server.111/b28286/index.htm
REGEXP_SUBSTR or REGEXP_REPLACE would also do the job, perhaps with a little less code, but maybe not as efficiently.
Here's a more creative way:
SELECT     RTRIM ( str
           , REPLACE (str, '/')
           )          AS file_path
FROM     table_x
;What results do you want if str does not contain a '/'?