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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Sql question
John,
I see two options. Both include a cross reference table with every date in it.
1. Outer join the dates table with the data table and nvl after the sum to replace nulls with 0's.
Or
2. Simply union-all your query as it stands right now with
SELECT DATE_FIELD, 0
FROM DATES_TABLE
and summarize over that dataset.
I think the union all (option #2) will be faster.
HTH
Lisa Koivu
Data Bored Administrator
Ft. Lauderdale, FL, USA
-----Original Message-----
From: Shaw, John B [SMTP:jbshaw_at_ingr.com] Sent: Friday, June 29, 2001 2:37 PM To: Multiple recipients of list ORACLE-LSubject: Sql question
I want to get every date between two user entered date's whether or not it
exists in the table and then the quantity of data for the date if any
exists.
My table t1 has date and quantity values (may be more than one quantity
field per date)
and I want 0 for all dates in the range where no data exists.
Is there a sql to get this without making some kind of date table?
so if the user enters 03/02/01 and 03/06/01 they get.
03/02/01 10 03/03/01 1 03/04/01 0 03/05/01 0 03/06/01 8
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