From: | Igor Korot <ikorot01(at)gmail(dot)com> |
---|---|
To: | Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com> |
Cc: | Jonathan Strong <jonathanrstrong(at)gmail(dot)com>, pgsql-general(at)lists(dot)postgresql(dot)org |
Subject: | Re: How to write such a query |
Date: | 2020-09-18 18:49:09 |
Message-ID: | CA+FnnTwPFb2ru4JkJdbyGo9+9U+bOPRTAt991qhqSMx7adrbEQ@mail.gmail.com |
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Lists: | pgsql-general |
Hi, Adrian,
On Fri, Sep 18, 2020 at 12:58 PM Adrian Klaver
<adrian(dot)klaver(at)aklaver(dot)com> wrote:
>
> On 9/18/20 10:46 AM, Igor Korot wrote:
> > Hi, Johnathan,
> >
> > On Fri, Sep 18, 2020 at 12:34 PM Jonathan Strong
> > <jonathanrstrong(at)gmail(dot)com <mailto:jonathanrstrong(at)gmail(dot)com>> wrote:
> >
> > Are you looking to arbitrarily update the field in the fifth row, or
> > can the row that needs to be updated be isolated by some add'l
> > attribute? What's the use case?
> >
> >
> > What do you mean?
> > I don't have any other attributes.
> >
> > I want to understand how to emulate MS Access behavior, where you have a
> > form
> > with the arbitrary query, then you can go to any record in that form and
> > update any field.
> >
> > Is it even possible from the "pure SQL" POV? Or Access is doing some
> > VBA/DB/4GL magic?
> >
>
> When you are updating a record in a form the framework(Access in your
> case) is using some identifier from that record to UPDATE that
> particular record in the database. From when I used Access, I seem to
> remember it would not give you INSERT/UPDATE capability on a form unless
> you had specified some unique key for the records. So you need to find
> what the key(generally a PRIMARY KEY) is and use that to do the UPDATE.
But now the question becomes
How to find what the primary key (or UNIQUE identifier) value is
for row 5 in the recordset?
Thank you.
>
> > Thank you.
> >
>
>
>
> --
> Adrian Klaver
> adrian(dot)klaver(at)aklaver(dot)com
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