Re: SQL Update Table

[Dave Mahadevan <mahadevan@xxxxxxxx>]

Jromeh@aol.com wrote:

> >> >   Does anyone know if it is possible to UPDATE   a field in one table
> with
> >> > a value from second table .
> >> >
> >> > TABLEA(MANY)   to  TABLEB(ONE)
> >> > TRANSNO
> >> > CUSNOA       CUSNOB
> >> > ATEXTDATA              BTEXTDATA
> >> >
> >> > I have an 30 byte text field(ATEXTDATA)  and a Numeric Customer#
> (CUSNOA)
> >> > in    TABLEA.
> >> > I want to update the ATEXTDATA with some information(BTEXTDATA)  from
> >> > TABLEB. (CUSNOB) is the  if the KEY.
>
> Explore something like:
>
> UPDATE TABLEA A1
>   SET ATEXTDATA = BTEXTDATA
> WHERE CUSNOA IN (SELECT CUSNOB FROM TABLEB WHERE A1.CUSNOA = CUSNOB)

Wont work.

> Not a join, but similar effect with subselect. Sure it works with
> constant where BTEXTDATA resides, less sure about "exported" variable,
> perhaps a qualifier for subselect file helps:
>
> UPDATE TABLEA A1
>   SET ATEXTDATA = B2.BTEXTDATA
> WHERE CUSNOA IN (SELECT CUSNOB FROM TABLEB B2 WHERE A1.CUSNOA = CUSNOB)

Ditto. Wont work.  AS/400 SQL is too sophisticated and extremely advanced to
permit such crap.

--
Thank You.

Regards

Dave Mahadevan.. mailto:mahadevan@fuse.net


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