Using some column data for values and some for ID - sql

Question

Slowly but surely I'm getting the hang of this. I created a report using the following query, which works perfectly. I'll give an example of the result below the query.
Select p.parent_program_id, p.program_id, p.name, p.copyright, p.active_flag,
max(Case when c.category_id = 36261 Then 'X' Else ' ' End) As CC_Indicator,
max(Case when c1.category_id = 36362 Then 'X' Else ' ' End) As CC_Badge,
max(Case when c2.category_id = 43221 Then 'X' Else ' ' End) As CC_Solution
From tbl_program p
Join xref_category_program xcp
On p.program_id=xcp.program_id
left Join tbl_category c
On xcp.category_id=c.category_id and c.category_id = 36261
left Join tbl_category c1
On xcp.category_id=c1.category_id and c1.category_id = 36362
left Join tbl_category c2
On xcp.category_id=c2.category_id and c2.category_id = 43221
where xcp.category_id in(36261,36362,43221)
group by p.program_id, p.name, p.copyright, p.active_flag, p.parent_program_id
Order by p.program_id
The results look like this (leaving out some unimportant columns for brevity's sake):
P.ParentProgramID P.ProgramID CC_Indicator CC_Badge CC_Solution
00001 12111 X
null 20200 X X X
null 00001 X X
The Indicator/Badge/Solution is identified by a category id. Now the people requesting this report want it sorted by company, which are also assigned category ids in the same column.
Assuming something like xcp.category_id values for company were 11111/22222/33333/44444, how would I put that in another column in this report in an order decided by the receivers of the report?
Something that looked like this, assuming a total of 6 records...
P.ParentProgramID P.ProgramID CC_Indicator CC_Badge CC_Solution Region
00001 12111 X 44444
null 20200 X X X 44444
null 00001 X X 22222
null 32332 X 11111
null 44215 X X 11111
null 84425 X 33333
second effort, described as rudimentary below...
Select p.parent_program_id, p.program_id, p.name, p.copyright, p.active_flag,
max(decode(c.category_id,36261,'X','')) As CC_Indicator,
max(decode(c1.category_id,36362,'X','')) As CC_Badge,
max(decode(c2.category_id,43221,'X','')) As CC_Solution,
max(decode(c3.category_id,6321,'US','')) As US,
max(decode(c4.category_id,6081,'CA','')) As CA,
max(decode(c5.category_id,35061,'GS','')) As GS
From tbl_program p Join xref_category_program xcp On p.program_id=xcp.program_id
left Join tbl_category c On xcp.category_id=c.category_id and c.category_id = 36261
left Join tbl_category c1 On xcp.category_id=c1.category_id and c1.category_id = 36362
left Join tbl_category c2 On xcp.category_id=c2.category_id and c2.category_id = 43221
left Join tbl_category c3 On xcp.category_id=c3.category_id and c3.category_id = 6321
left Join tbl_category c4 On xcp.category_id=c4.category_id and c4.category_id = 6081
left Join tbl_category c5 On xcp.category_id=c5.category_id and c5.category_id = 35061
where xcp.category_id in(36261,36362,43221,6321,6081,35061)
group by p.program_id, p.name, p.copyright, p.active_flag, p.parent_program_id
Order by p.program_id

Answer 1

I think you can simplify your query a bit, as follows:
Select p.parent_program_id,
p.program_id,
p.name,
p.copyright,
p.active_flag,
max(decode(c.category_id,36261,'X','')) As CC_Indicator,
max(decode(c.category_id,36362,'X','')) As CC_Badge,
max(decode(c.category_id,43221,'X','')) As CC_Solution,
max(decode(c.category_id,6321, 'US','')) As US,
max(decode(c.category_id,6081, 'CA','')) As CA,
max(decode(c.category_id,35061,'GS','')) As GS
From tbl_program p
INNER Join xref_category_program xcp
On p.program_id = xcp.program_id
INNER Join tbl_category c
On xcp.category_id = c.category_id
where xcp.category_id in (36261, 36362, 43221, 6321, 6081, 35061)
group by p.program_id, p.name, p.copyright, p.active_flag, p.parent_program_id
Order by p.program_id
I don't think you need the multiple joins of TBL_CATEGORY - one should do it, as you're identifying which categories you want in the WHERE clause.
I'm still at something of a loss as to getting the region ID's in. It seems that most of the basic data for this query (PROGRAM_ID, etc) comes from TBL_PROGRAM. Is there a column on TBL_PROGRAM which identifies the region? You can always make a second join of XREF_CATEGORY_PROGRAM or TBL_CATEGORY, but without knowing what column in the other tables identifies the region I can't help you understand how to get the region data joined in.
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