RE: Dimension table load - PLSQL question

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_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] 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_at_gmail.com> wrote:

On 9/28/05, Ranko Mosic <ranko.mosic_at_gmail.com > 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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