RE: Dimension table load - PLSQL question
- From: "Mercadante, Thomas F (LABOR)" <Thomas.Mercadante@xxxxxxxxxxxxxxxxx>
- To: <ranko.mosic@xxxxxxxxx>
- Date: Thu, 29 Sep 2005 09:00:33 -0400
Ronko,
Could you union all of the selects into one query and then use merge?
Merge (table)
Using
select descr1
from lkp_table1 where cd = p_cd1
union
select descr2
from lkp_table2 where cd = p_cd2 etc
etc.........
Would this work?
Tom
________________________________
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Ranko Mosic
Sent: Thursday, September 29, 2005 8:45 AM
To: Paul Drake
Cc: ORACLE-L
Subject: Re: Dimension table load - PLSQL question
Thanks for very helpful, no patronizing answer. If you've read more
carefully what the problem is
you'd see that MERGE can't work because it works on one table upserting
another.
I have one table being inserted from 6 tables.
Thanks genius.
On 9/28/05, Paul Drake <bdbafh@xxxxxxxxx> wrote:
On 9/28/05, Ranko Mosic <ranko.mosic@xxxxxxxxx > wrote:
Hi,
requirement:
- input parameters are codes p_cd1, p_cd2, ...
- for these codes I get descriptions ( select descr1 into
v_descr1 from
lkp_table1 where cd = p_cd1; select descr2 into v_descr2 from
lkp_table2 where
cd = p_cd2 etc )
- check if table t has records where t.descr1 = v_descr1
and t.descr2 = v_descr2 and on and on ....;
- if row exists return primary key;
- if not then insert.
What is the best way of doing it ( simplest ) ?
Regards, Ranko.
Ranko,
"Simplest way" is to solicit opinions without using a search engine or
checking the documentation.
Its also usually "simplest" to leverage the existing provided
functionality, rather than writing your own routines, error handling,
etc.
A search of "oracle 10.1 upsert" in google.com <http://google.com/> +
"I'm feeling lucky" produced this for me.
Perhaps you might get lucky too.
Paul
http://www.psoug.org/reference/merge.html
MERGE <hint> INTO <table_name>
USING <table_view_or_query>
ON (<condition>)
WHEN MATCHED THEN <update_clause>
WHEN NOT MATCHED THEN <insert_clause>;
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