I want to find records in a (Oracle SQL) table using the creation date field where records are older than 30 days. It would be nice to find records using a operators like > but if anyone can suggest quick SQL where clause statement to find records older than 30 days that would be nice. Please suggest Oracle syntax as that is what I am using.
+8
A:
Use:
SELECT *
FROM YOUR_TABLE
WHERE creation_date <= TRUNC(SYSDATE) - 30
SYSDATE returns the date & time; TRUNC resets the date to being as of midnight so you can omit it if you want the creation_date
that is 30 days previous including the current time.
Depending on your needs, you could also look at using ADD_MONTHS:
SELECT *
FROM YOUR_TABLE
WHERE creation_date <= ADD_MONTHS(TRUNC(SYSDATE), -1)
OMG Ponies
2010-10-05 01:39:48
I prefer `creation_date <= TRUNC(SYSDATE) - interval '1' month` :)
be here now
2010-10-05 04:03:20
@be here now: that's fine, as long as you don't mind if it fails with ORA-01839 "date not valid for month specified" in some cases, e.g. if creation_date is 31 March.
Jeffrey Kemp
2010-10-05 04:38:38
hm, I've always believed `interval` expression was designed to handle these situations correctly...
be here now
2010-10-05 04:57:34
It is a bit "pony" as we Londoners might say, isn't it?
Tony Andrews
2010-10-05 08:35:40