포스트 그레스에서 피벗 생성

Question

나는 postgres RDBMS를 사용 중이며 이것을 피벗하고 싶습니다.

어떻게 결과를 포스트그릭스로 피벗합니까? 나는 아래의 쿼리를 exe 인 경우

은 내가 게시하기 전에이 시도

이 결과를 얻을!

select * from 
(
select count(tnx_id) as x, 
case act_dt between 20140301 and 20140831 then '0-6 m' 
when act_dt between 20130901 and 20140231 then '7-12 m' 
when act_dt between 20130301 and 20130831 then '13-18 m' 
else '18+' 
end as act_bucket, 

case when tnx_dt_int between 20140301 and 20140831 then '0-6 m' 
when tnx_dt_int between 20130901 and 20140231 then '7-12 m' 
when tnx_dt_int between 20130301 and 20130831 then '13-18 m' 
else '18+' 
end as tnx_bucket 



from card 
inner join tnx on card_id=tnx_cardh_id 
group by act_bucket,tnx_bucket) 
x1 
pivot(x) 
(
for tnx_bucket in([0-6 m],[7-12 m],[13-18 m],[18+]) 
) 



so that i get like this 

       act_bucket 
tnx_bucket 0-6 m 7-12 m 13-18 m 18+ 
0-6m   < here filled with Count(tnx_id)  > 
7-12 m 
13-18 m 
18+ 

Answer 1

귀하는 (doc로부터)이 그 예입니다 tablefunc postgreSQL module

의 crosstab 기능을 찾고 있습니다 :

CREATE TABLE ct(id SERIAL, rowid TEXT, attribute TEXT, value TEXT); 
INSERT INTO ct(rowid, attribute, value) VALUES('test1','att1','val1'); 
INSERT INTO ct(rowid, attribute, value) VALUES('test1','att2','val2'); 
INSERT INTO ct(rowid, attribute, value) VALUES('test1','att3','val3'); 
INSERT INTO ct(rowid, attribute, value) VALUES('test1','att4','val4'); 
INSERT INTO ct(rowid, attribute, value) VALUES('test2','att1','val5'); 
INSERT INTO ct(rowid, attribute, value) VALUES('test2','att2','val6'); 
INSERT INTO ct(rowid, attribute, value) VALUES('test2','att3','val7'); 
INSERT INTO ct(rowid, attribute, value) VALUES('test2','att4','val8'); 

SELECT * 
FROM crosstab(
    'select rowid, attribute, value 
    from ct 
    where attribute = ''att2'' or attribute = ''att3'' 
    order by 1,2') 
AS ct(row_name text, category_1 text, category_2 text, category_3 text); 

row_name | category_1 | category_2 | category_3 
----------+------------+------------+------------ 
test1 | val2  | val3  | 
test2 | val6  | val7  | 
(2 rows) 

행운을 빕니다!