SQL & PL/SQL :: Construct Query To Fetch Different Rows From Same Table In Different Columns

Lets say I have a table in ORACLE database like:

ACC_ID | ACC_AMT
111 | 10000
111 | 12000
111 | 14000
222 | 25000
222 | 30000
333 | 18000
333 | 27000
333 | 13000
333 | 15000

I want to get the output as:

ACC_ID_1 | ACC_AMT_1 | ACC_ID_2 | ACC_AMT_2 | ACC_ID_3 | ACC_AMT_3
111 | 10000 | 222 | 25000 | 333 | 18000
111 | 12000 | 222 | 30000 | 333 | 27000
111 | 14000 | null | null | 333 | 13000
null | null | null | null | 333 | 15000

I need each different ACC_ID with ACC_AMT in different columns. The table may have other different ACC_ID also, but I will fetch only what I need. What is the best way to do this?

So far I have tried this:

SELECT
(CASE WHEN ACC_ID=111 THEN ACC_ID END) AS ACC_ID_1,
(CASE WHEN ACC_ID=111 THEN ACC_AMT END) AS ACC_AMT_1,
(CASE WHEN ACC_ID=222 THEN ACC_ID END) AS ACC_ID_2,
(CASE WHEN ACC_ID=222 THEN ACC_AMT END) AS ACC_AMT_2,
(CASE WHEN ACC_ID=333 THEN ACC_ID END) AS ACC_ID_3,
(CASE WHEN ACC_ID=333 THEN ACC_AMT END) AS ACC_AMT_3
FROM <TABLE_NAME>

But I am not getting the desired result.