将行转置为db2中的列

Question

I have a query output as below

Customer policytype plan amount 

Sam      ulip       P1   250

Sam      ulife      u1   435

Sam      Ulip       P2   370

Hazar    Ulip       P1   679

Hazar    Ulife      u1   567

And so on ....

I need to transpose above output as follows

Customer ulip ulife

Sam      250  435

Sam      370  Null 

Hazar    679  567

Can someone help me to achieve above result in db2

Answer 1

Use conditional Aggregate

SELECT customer,
        Max(CASE WHEN policytype = 'ulip' THEN amount END) AS ulip,
        Max(CASE WHEN policytype = 'ulife' THEN amount END) AS ulife
FROM   Youratable
GROUP  BY customer,
            CASE WHEN plan IN ( 'p1', 'u1' ) THEN 1 ELSE 0 END