Get a quarter out of data for a column chart

Question

Who can help me with this challenge?
I want to create a column chart with four quarters in the current year and one column with the rest later in time.
One project can have multiple output data. They are separated by an ;
The notation of the outputdata can be a date (d-m-yyyy), a month (mm-yyyy) or a quarter (Q1-yyyy).
This is by example the available data.
Project              outputdata
Project 1           1-4-2014
Project 2           03-2014;Q4-2014;Q2-2015
Project 3           25-09-2014;Q1-2015
The data I want to get for the column chart is:
Project              outputdata                    columnchart
Project 1           1-4-2014                       Q2-2014
Project 2           03-2014                        Q1-2014
Project 2           Q4-2014                       Q4-2014
Project 2           Q2-2015                       2015 and later
Project 3           25-09-2014                   Q3-2014
Project 3           Q1-2015                       2015 and later
I hope that someone can help me in the right direction.
Thanks in advance,
Els

Answer 1

Adding to what Frank has already suggested, try something on these lines:
Something like this?
SQL> ed
Wrote file afiedt.buf
  1  with x2 as(
  2     select 'proj1' proj, '1-4-2014' op, NULL chart from dual UNION ALL
  3     select 'proj2' proj, '03-2014' op, NULL chart from dual UNION ALL
  4     select 'proj2' proj, 'Q4-2014' op, NULL chart from dual UNION ALL
  5     select 'proj2' proj, 'Q2-2015' op, NULL chart from dual UNION ALL
  6     select 'proj3' proj, '25-09-2014' op, NULL chart from dual UNION ALL
  7     select 'proj3' proj, 'Q1-2015' op, NULL chart from dual
  8  )
  9  select
10     proj,
11     op,
12     case
13     when regexp_like(op,'((\d{1}|\d{2})-(\d{1}|\d{2})-(\d{4}))')
14     then
15             'Q'||TO_CHAR(TO_DATE(op,'dd-mm-yyyy'),'Q')||'-'||TO_CHAR(TO_DATE(op,'dd-mm-yyyy'),'yyyy')
16     when regexp_like(op, 'Q\d{1}-\d{4}')
17     then
18             CASE
19             when SUBSTR(op,-4,4) > 2014
20             then
21                     SUBSTR(op,-4,4)||' and later'
22             else
23                     op
24             end
25     when regexp_like(op, '\d{2}-\d{4}')
26     then
27             'Q'||TO_CHAR(TO_DATE(op,'mm-yyyy'),'Q')||'-'||TO_CHAR(TO_DATE(op,'mm-yyyy'),'yyyy')
28     end
29* from x2
SQL> /
PROJ       OP                   CASEWHENREGEXP
proj1      1-4-2014             Q2-2014
proj2      03-2014              Q1-2014
proj2      Q4-2014              Q4-2014
proj2      Q2-2015              2015 and later
proj3      25-09-2014           Q3-2014
proj3      Q1-2015              2015 and later
6 rows selected.