在Oracle中将列转换为行

Question

I have table structure as below, Need the output as mentioned below

Table :

A                   B
CUSTOMER_TYPE_ID    4
CUSTOMER_TYPE_ID    3
CUSTOMER_TYPE_ID    2
CUSTOMER_TYPE_ID    1
CUSTOMER_TYPE_ID    0

Answer :

'4','3','2','1','0'

How to do it?

Answer 1

As described, this isn't a pivot but aggregate string concatenation. The Oracle function is LISTAGG() :

select listagg(b, ',') within group (order by b desc) as b
from t
group by a;

EDIT:

If you want single quotes around the values:

select listagg('''' || b || '''', ',') within group (order by b desc) as b
from t
group by a;