Re: SQL Update Multiple Fields from Different File

[Michael Ryan <michaelrtr@xxxxxxxxx>]

Thanks Rob...I get you. Now to do it...

On Mon, Oct 8, 2012 at 1:30 PM,  <rob@xxxxxxxxx> wrote:
> Michael,
>
> If strmstpfd has these values
>
> ststr   stm#d   stm#e
> 1       a       b
> 2       c
> 3               d
>
> SELECT * FROM michael/strmstpfd WHERE stm#d <> ' ' and stm#e <> ' '
> would only return
> ststr   stm#d   stm#e
> 1       a       b
>
> So if you had 1,2,3 in strmstp it would try to update 2 & 3 with null
> values.  Normally fixed by some usage of EXISTS to therefore only update 1
> and ignore 2 & 3.
>
>
>
> Rob Berendt
> --
> IBM Certified System Administrator - IBM i 6.1
> Group Dekko
> Dept 1600
> Mail to:  2505 Dekko Drive
>           Garrett, IN 46738
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> http://www.dekko.com
>
>
>
>
>
> From:   Michael Ryan <michaelrtr@xxxxxxxxx>
> To:     Midrange Systems Technical Discussion <MIDRANGE-l@xxxxxxxxxxxx>,
> Date:   10/08/2012 01:08 PM
> Subject:        SQL Update Multiple Fields from Different File
> Sent by:        midrange-l-bounces@xxxxxxxxxxxx
>
>
>
> This stuff drives me crazy. With this SQL statement:
>
> UPDATE michael/strmstp a SET (a.stm#d, a.stm#e) =
> (select b.stm#d, b.stm#e
> from michael/strmstpfd b WHERE a.ststr = b.ststr
> and b.stm#d <> ' ' and b.stm#e <> ' ')
>
> I'm getting a Null values not allowed in column or variable STM#D.
>
> I know there is a one to one relationship between the two tables. I
> also know that many records in both files
>
> If I do this:
>
> SELECT * FROM michael/strmstpfd WHERE stm#d <> ' ' and stm#e <> ' '
>
> I get all the records I expect, and there are values for each stm#d
> and and stm#e.
>
> Any ideas what I'm doing wrong here?
>
> Thanks!
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