CODEWITHSUNDEEP
sqloracle-databasepivot
TommyT
TommyT

Reputation: 1797

ORACLE SQL pivot for non-aggregate like query

I have a table which has data like :- id name data 1 a 10 1 b 20 1 c 30 2 d 40 2 e 50 Now, If I want to convert the rows into columns(giving them a unique name) and aggregate the data row (using xmlagg) ... How can I get output like

id name_1 name_2 name_3 data 1 a b c 10,20,30 2 d e 40,50

So basically convert rows into columns and rename them and aggregate the data related to them.

Upvotes: 1

Views: 2741

Answers (2)

Gordon Linoff
Gordon Linoff

Reputation: 1269893

For this type of query, you need to generate a sequential number and then do conditional aggregation:

select id,
       max(case when seqnum = 1 then name end) as name1,
       max(case when seqnum = 2 then name end) as name2,
       max(case when seqnum = 3 then name end) as name3,
       list_agg(data, ',') within group (order by name) as data
from (select t.*, row_number() over (partition by id order by name) as seqnum
      from table t
     ) t
group by id;

Upvotes: 0

xQbert
xQbert

Reputation: 35333

As an example: you can use listAgg or WM_Concat depending on version of Oracle

SELECt ID, wm_concat(data)
FROM Table
GROUP BY ID

you can also use a case statement but without knowing how you want to determine which names go in what of the 3 columns, I'm not hazarding a guess for it yet...

Upvotes: 1

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