"REPLACE CHARACTERS FOR 'U' if the value is not a 'F' or me"
Hi allI need a function to replace all characters to U if its not F or M
The function should be similar below. But donno to form a regular expressiion above that can be placed in the second parameter.
REGEXP_REPLACE('R','[^FM]','U')
Entry
F
R
M
M
A
B
Output
F
U
M
U
M
U
U
Thank you
CDPrasad
Published by: cdprasad on January 23, 2011 07:28
Why would you use a regular expression (cpu-crushing) here?
Looks like you can do it easily with the CASE:
SQL> create table t as
2 select 'F' col from dual union all
3 select 'R' from dual union all
4 select 'M' from dual union all
5 select null from dual union all
6 select 'M' from dual union all
7 select 'A' from dual union all
8 select 'B' from dual;
Table created.
SQL>
SQL> select col
2 , case
3 when col not in ('F', 'M')
4 or col is null
5 then 'U'
6 else col
7 end
8 from t;
C C
- -
F F
R U
M M
U
M M
A U
B U
7 rows selected.
Tags: Database
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