RE: Dratted LONG column
- From: "Mark W. Farnham" <mwf@xxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 24 Jun 2004 13:08:59 -0400
if you USE of the data is also segmented by the id_type, it might be
convenient to partition. (this could also be WAY off target.)
if you're up to a version of Oracle that allows the use of indexes for NOT
NULL predicates, separation by single column indexes on each id_column will
be nicely terse, including only values for the rows you need for each source
type. You probably don't want these indexes to exist for very long in
production, although from your description, only one would be troubled per
insert and they would never get updated. Hmm. Maybe you can leave them
around.
mwf
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of Thomas Day
Sent: Thursday, June 24, 2004 10:30 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: Dratted LONG column
I have to do a select using the long column in the where clause.
Of course that won't work.
7 million rows. Some of the long data is over 15,000 characters (people
like to write novels).
I've tried to use the ANYDATA data type but I can't COPY into ANYDATA and I
can't SELECT (for insert) from a LONG. Any ideas (or being pointed in the
right direction) would be greatly appreciated.
On a related note - if I'm going to build a new table (and I think that I
am), the existing table has a poor design. There are 10 attributes that
are IDs. One and only one of them must be non-null. I.e., one will have
data and the other nine must be null. Rather than have 10 fields in my new
table (with only one of them having data at any one time) I'd like to have
an ID number and an ID_TYPE that records the column name in the original
table where the value was non-null. Any nifty ideas on how to do this
(other than using a series of selects from the original table that tests
each field for non-nullity)?
Thanks
----------------------------------------------------------------
Please see the official ORACLE-L FAQ: http://www.orafaq.com
----------------------------------------------------------------
To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx
put 'unsubscribe' in the subject line.
--
Archives are at //www.freelists.org/archives/oracle-l/
FAQ is at //www.freelists.org/help/fom-serve/cache/1.html
-----------------------------------------------------------------
----------------------------------------------------------------
Please see the official ORACLE-L FAQ: http://www.orafaq.com
----------------------------------------------------------------
To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx
put 'unsubscribe' in the subject line.
--
Archives are at //www.freelists.org/archives/oracle-l/
FAQ is at //www.freelists.org/help/fom-serve/cache/1.html
-----------------------------------------------------------------
Other related posts:
