RE: Dimension table load - PLSQL question

"when matched" clause is optional, so you should be fine without
updates.
As for returning PK, regular "INSERT" has "RETURNING" clause, but I
don't see one for "insert" used withing "MERGE".  File "enhancement
request" with Oracle :)

________________________________

From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Ranko Mosic
Sent: Thursday, September 29, 2005 9:34 AM
To: Igor Neyman
Cc: Paul Drake; ORACLE-L
Subject: Re: Dimension table load - PLSQL question


What about returning key if record exists ? There is no update
happening. 
 
Thanks, rm.

 
On 9/29/05, Igor Neyman <ineyman@xxxxxxxxxxxxxx> wrote: 

        Does it make a difference: 1 table or 6?
         
        MERGE INTO t
            USING (SELECT(select descr1 from lkp_table1 where cd =
p_cd1) AS v_descr1, 
                                        select descr2 from lkp_table2
where cd = p_cd2) AS v_descr2 , 
                                        .... etc. )from dual) c
            ON (t.descr1 = c.v_descr1 and t.descr2 = c.v_descr2 and ...
etc)
            WHEN NOT MATCHED INSERT (t.descr1, t.descr2, ...) 
                VALUES (c.v_descr1, c.v_descr2, ...)
         
        Really, no need to react the way, you did...
        
         
        Igor Neyman
        

         
________________________________

        From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:
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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