Question: What do
I do
with the utl_raw.cast_to_raw procedure?
Answer: Here we see using
utl_raw.cast_to_raw:
SQL> DECLARE
2
--note that PL/SQL
variable is limited to size 32KB
3
r RAW(32767);
4
BEGIN
5
r :=
UTL_RAW.CAST_TO_RAW('Oracle Utilites Book');
6
dbms_output.put_line(r);
7
8
r :=
UTL_ENCODE.BASE64_ENCODE(r);
9
dbms_output.put_line(r);
10
11
--now pass r into the decode function
12
r := UTL_ENCODE.BASE64_DECODE(r);
13
dbms_output.put_line(r);
14
END;
15
/
4F7261636C65205574696C6974657320426F6F6B
54334A685932786C49465630615778706447567A49454A766232733D
4F7261636C65205574696C6974657320426F6F6B
You cannot directly display data that is stored using
utl_raw.cast_to_raw:
insert into tbl values(1, utl_raw.cast_to_raw('D:\pics\pic1.jpg'));
1 record
created.
sql>select
* from tbl;
sp2-0678:Column or attribute type
can not be displayed by SQL*PLUS
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