Re: SQL Update Multiple Fields from Different File

[Michael Ryan <michaelrtr@xxxxxxxxx>]

This is where I lose my mind. This would have been done a long time
ago with RLA with a CHAIN or even MR. But that's the way I think.

On Mon, Oct 8, 2012 at 1:32 PM, Michael Ryan <michaelrtr@xxxxxxxxx> wrote:
> 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
> > Ship to:  Dock 108
> >           6928N 400E
> >           Kendallville, IN 46755
> > 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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> > --
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