puede proporcionar alias a las nuevas columnas en el pivot declaración IN cláusula. (NB:Esto es diferente del estándar donde la cláusula IN() que no permite alias.)
with testdata as
(
select 'Fred' First_Name, 10 Items from dual
union
select 'John' First_Name, 5 Items from dual
union
select 'Jane' First_Name, 12 Items from dual
union
select 'Fred' First_Name, 15 Items from dual
)
select * from testdata
pivot (
sum(Items)
for First_Name
in ('Fred' as fred,'John' as john,'Jane' as jane)
)
y también para su cláusula agregada que es necesaria si tiene varias cláusulas.
with testdata as
(
select 'Fred' First_Name, 10 Items from dual
union
select 'John' First_Name, 5 Items from dual
union
select 'Jane' First_Name, 12 Items from dual
union
select 'Fred' First_Name, 15 Items from dual
)
select * from testdata
pivot (
sum(Items) itmsum,
count(Items) itmcnt
for First_Name
in ('Fred' as fred,'John' as john,'Jane' as jane)
)
regresa
FRED_ITMSUM FRED_ITMCNT JOHN_ITMSUM JOHN_ITMCNT JANE_ITMSUM JANE_ITMCNT
----------- ----------- ----------- ----------- ----------- -----------
25 2 5 1 12 1
Por supuesto, puede completar el círculo y usar el alias estándar de Oracle y cambiarles el nombre a lo que quiera, incluso volver a poner comillas.
with testdata as
(
select 'Fred' First_Name, 10 Items from dual
union
select 'John' First_Name, 5 Items from dual
union
select 'Jane' First_Name, 12 Items from dual
union
select 'Fred' First_Name, 15 Items from dual
)
select FRED_ITMSUM "Fred's Sum", FRED_ITMCNT "Fred's Count"
, JOHN_ITMSUM "John's Sum", JOHN_ITMCNT "John's Count"
, JANE_ITMSUM "Janes's Sum", JANE_ITMCNT "Janes's Count"
from testdata
pivot (
sum(Items) itmsum,
count(Items) itmcnt
for First_Name
in ('Fred' as fred,'John' as john,'Jane' as jane)
)
da
Fred's Sum Fred's Count John's Sum John's Count Janes's Sum Janes's Count
---------- ------------ ---------- ------------ ----------- -------------
25 2 5 1 12 1
