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179

answers:

1

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
I prefer `creation_date <= TRUNC(SYSDATE) - interval '1' month` :)
be here now
@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
hm, I've always believed `interval` expression was designed to handle these situations correctly...
be here now
It is a bit "pony" as we Londoners might say, isn't it?
Tony Andrews