Help wiht multi pivot table

Question

Hi
I have searched pivotand not sure if what I see will work for me. here is what I have
table
ssn,benefit_id,plan_id, option_id
123456789,MEDICAL,BCBS,80/20
123456789,MEDICAL,ATENA,1020
I need a pivot table where i can put the ssn and then all benefit_id,plan_id, option_id combinations in the table into a pivot table sorfor above I have
123456789,MEDICAL,BCBS,80/20,MEDICAL,AETNA,1020,etc
I have this working
SELECT ssn,
LTRIM(MAX(SYS_CONNECT_BY_PATH(benefit_id,','))
KEEP (DENSE_RANK LAST ORDER BY curr),',') AS benefits
FROM (SELECT ssn,
benefit_id,
ROW_NUMBER() OVER (PARTITION BY ssn ORDER BY benefit_id) AS curr,
ROW_NUMBER() OVER (PARTITION BY ssn ORDER BY benefit_id) -1 AS prev
FROM emp_ben_elects)
GROUP BY ssn
CONNECT BY prev = PRIOR curr AND ssn = PRIOR ssn
START WITH curr = 1;
IN 9.i
How do I add the plan_id and option_id?
Any Ideas?

Answer 1

Hi,
If you use Rob's approach, change the second argument of SYS_CONNECT_BY_PATH to something that will not appear in the first argument.
That is, don't say:
SYS_CONNECT_BY_PATH ( benefit_id || ',' || plan_id || ',' || option_id
                    , ','     -- WRONG: Causes ORA-30004
                    )Instead, do something like:
SYS_CONNECT_BY_PATH ( benefit_id || ',' || plan_id || ',' || option_id
                    , ';'     -- Assumes semicolon never appears in columns above
                    )If you really want to have the same character that separates fields (',' above) used to separate records, too (instead of ';', above) use REPLACE on the string returned by SYS_CONNECT_BY_PATH:
REPLACE ( SYS_CONNECT_BY_PATH ( benefit_id || ',' || plan_id || ',' || option_id
                              , ';'     -- Assumes semicolon never appears in columns above
        )I wouldn't use CONNECT BY at all. I suggest the user-defined STRAGG function, which you can copy from astom
After installing STRAGG, your entire query will just be
SELECT    ssn
,         STRAGG  benefit_id || ',' || plan_id || ',' || option_id)
FROM      emp_ben_elects
GROUP BY  ssn;Unlike your original query, the records will not necessarily appear in any particular order.
If you want that, STRAGG can be used as an analytc function.