Fondamentalement, je veux exécuter la requête suivante:
INSERT INTO historical_car_stats (historical_car_stats_id, year, month, make, model, region, avg_msrp, count)
SELECT
my_seq.nextval,
'2010',
'12',
'ALL',
'ALL',
region,
sum(avg_msrp * count) / sum(count),
sum(count)
FROM historical_car_stats
WHERE year = '2010'
AND month = '12'
AND make != 'ALL'
GROUP BY region;
Cela ne fonctionne pas car "numéro de séquence non autorisé ici" erreur SQL. Comment puis-je écrire ceci afin qu'Oracle me laisse faire ce que je veux faire?
En supposant que vous souhaitiez grouper les données avant de générer la clé avec la séquence, il semble que vous souhaitiez quelque chose comme
INSERT INTO HISTORICAL_CAR_STATS (
HISTORICAL_CAR_STATS_ID,
YEAR,
MONTH,
MAKE,
MODEL,
REGION,
AVG_MSRP,
CNT)
SELECT MY_SEQ.nextval,
year,
month,
make,
model,
region,
avg_msrp,
cnt
FROM (SELECT '2010' year,
'12' month,
'ALL' make,
'ALL' model,
REGION,
sum(AVG_MSRP*COUNT)/sum(COUNT) avg_msrp,
sum(cnt) cnt
FROM HISTORICAL_CAR_STATS
WHERE YEAR = '2010'
AND MONTH = '12'
AND MAKE != 'ALL'
GROUP BY REGION)
J'ai testé et le script fonctionne bien!
INSERT INTO HISTORICAL_CAR_STATS (HISTORICAL_CAR_STATS_ID, YEAR,MONTH,MAKE,MODEL,REGION,AVG_MSRP,COUNT)
WITH DATA AS
(
SELECT '2010' YEAR,'12' MONTH ,'ALL' MAKE,'ALL' MODEL,REGION,sum(AVG_MSRP*COUNT)/sum(COUNT) AVG_MSRP,sum(Count) COUNT
FROM HISTORICAL_CAR_STATS
WHERE YEAR = '2010' AND MONTH = '12'
AND MAKE != 'ALL' GROUP BY REGION
)
SELECT MY_SEQ.NEXTVAL, YEAR,MONTH,MAKE,MODEL,REGION,AVG_MSRP,COUNT
FROM DATA;
vous pouvez lire cet article pour mieux comprendre! http://www.orafaq.com/wiki/ORA-02287