Re: Select & Update

[Rob Berendt <rob@xxxxxxxxx>]

You did not qualify whether or not you are trying to update existing 
records, or insert new records.  You have no WHERE clause.  Therefore 
my first example is assuming that you are trying to insert new records:
INSERT INTO TABLEA (A, B)
    (SELECT C,D FROM TABLEB)

If you are trying to update existing records I think that what you want 
will require V4R3 of the operating system.  With that version they finally 
allowed you to update the values in one file with the values from another.  
Let's pretend that your tables have two additional fields:  TABLEA.KEYA, 
TABLEB.KEYB.  The statement will look like the following:
UPDATE TABLEA
   SET (A, B) =
        (SELECT C, D from TABLEB
            WHERE tablea.keya = keyb)






prakashsubramani@hotmail.com on 10/29/98 12:06:18 PM
Please respond to MIDRANGE-L@midrange.com@Internet
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cc:      

Subject:        Select & Update



Hi,

I have a situation wherein I do'nt know how to do that. The thing is , I 
have 2 tables Table A & Table B. 

Table A (in library A)                                       Table B(in 
library B)
----------                                                             
-----------
                                                                      
 Field A                                                           Field 
C

 Field B                                                           Field 
D

 Field E                                                           Field 
E

 Field F

 Now I want to select all fields of table A and update field A with 
Field C and Field B with Field D. When I try to do this via Interacive 
SQL , I get an error message saying that an Update to clause cannot be 
used with a Select statement. I tried SQLRPG through cursors but the 
result was the same. I will be happy if any one may be able to throw 
some light on how to do this. I use V4R1. 


Thanks.

Prakash.
















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