How can I separate one column into multiple column?

Question

How can I separate one column into multiple column?
This is what I have:
BUYER_ID ATTRIBUTE_NAME ATTRIBUTE_VALUE
0001 PHONE_NUMBER 555-555-0001
0001 EMAIL [email protected]
0001 CURRENCY USD
0002 PHONE_NUMBER 555-555-0002
0002 EMAIL [email protected]
0002 CURRENCY USD
0003 PHONE_NUMBER 555-555-0003
0003 EMAIL [email protected]
0003 CURRENCY CAD
This is what I would like to have:
BUYER_ID PHONE_NUMBER EMAIL CURRENCY
0001 555-555-0001 [email protected] USD
0002 555-555-0002 [email protected] USD
0003 555-555-0003 [email protected] CAD
Any help would be greatly appreciated.

Answer 1

This is another solution. Suppose your actual table's name is test(which has the redundant data). create a table like this:
CREATE TABLE test2 (BUYER_ID number(10),PHONE_NUMBER varchar2(50),EMAIL varchar2(50),CURRENCY varchar2(50));
then you will type this procedure:
declare
phone_number_v varchar2(50);
EMAIL_v varchar2(50);
CURRENCY_v varchar2(50);
cursor my_test is select * from test;
begin
for my_test_curs in my_test loop
select ATTRIBUTE_VALUE INTO phone_number_v from test
where person_id=my_test_curs.person_id
and attribute_name ='PHONE_NUMBER';
select ATTRIBUTE_VALUE INTO EMAIL_v from test
where person_id=my_test_curs.person_id
and attribute_name ='EMAIL';
select ATTRIBUTE_VALUE INTO CURRENCY_v from test
where person_id=my_test_curs.person_id
and attribute_name ='CURRENCY';
INSERT INTO test2
VALUES (my_test_curs.person_id,phone_number_v,EMAIL_v,CURRENCY_v);
END LOOP;
END;
Then you will create your final table like this:
create table final_table as select * from test2 where 1=2;
After that write this code:
INSERT ALL
into final_table
SELECT DISTINCT(BUYER_ID),PHONE_NUMBER,EMAIL,CURRENCY
FROM TEST2;
If you have a huge amount of data in your original table this solution may take a long time to do what you need.