How to convert the row in to a column.

Question

Hi All,
i am having a query like this.
select
COUNT(PA_COL1),
COUNT(PA_COL2)
from ref_item;
here PA_COL1,PA_COL2 are column of table ref_item.
the out of this query is some thing like this
PA_COL1 PA_COL2
20000 12376
i want the output to be like
column record_count
PA_COL1 200000
PA_COL2 12376
Please help me to get the query for this.
also you have 30 columns in the table ref_item from PA_COL1 ....... PA_COL30.

Answer 1

Just cutting it out, I mistakenly pasted the wrong example here...thanks for pointing it out...
I am pasting a pretty good example from that thread itself, obviously you need to modify it to fit your need and thats the only way to learn:
WITH t AS
--( SELECT 'A' col FROM dual--
UNION ALL
SELECT 'B' FROM dual
UNION ALL
SELECT 'C' FROM dual
UNION ALL
SELECT 'D' FROM dual
SELECT REPLACE(MAX(SYS_CONNECT_BY_PATH(col,' ')),' ') "Col"
FROM
--(SELECT col,--
row_number() over (Order By col)    AS curr,
row_number() over (Order By col) -1 AS prev
FROM t
CONNECT BY prev = Prior curr
START WITH curr = 1;
Edited by: Ankit Rathi on May 15, 2012 1:26 AM