Question

I have a column of RAW type in my database. How can I use it in where clause?
i.e to get only values with third byte equal to 4.
this does not work:

SELECT v from T where v[3]=4

Answer 1

use the functions of the UTL_RAW package to interact with raws, for example:

SQL> create table test (a raw(16));

Table created

SQL> insert into test values ('FF00FF00FF');

1 row inserted

SQL> select * from test where utl_raw.substr(a, 3, 1) = 'FF';

A
--------------------------------
FF00FF00FF