RE: 4D Selection from SQL Query

2019-02-06 Thread Randy Engle via 4D_Tech 
Miyako

Many thanks again!
Works like a charm!

Took a couple of passes to see the "Double Underline" in the virtual field:  
__ROW_ID

I'm going to take a W.A.G. that this is what QUERY BY SQL command is doing 
behind the scenes.

Not sure how I'm going to use this, but I think it might come in handy at some 
point.

Thanks again,

Randy Engle,

-Original Message-
From: 4D_Tech <4d_tech-boun...@lists.4d.com> On Behalf Of Keisuke Miyako via 
4D_Tech
Sent: Tuesday, February 5, 2019 4:30 PM
To: 4D iNug Technical <4d_tech@lists.4d.com>
Cc: Keisuke Miyako 
Subject: Re: 4D Selection from SQL Query

alternatively, I guess we can SELECT __ROW_ID == record number (not all tables 
have a primary key).

https://doc.4d.com/4Dv17/4D/17/Replication-via-SQL.300-3786654.en.html
https://doc.4d.com/4Dv17/4D/17/CREATE-SELECTION-FROM-ARRAY.301-3729926.en.html

2019/02/06 3:31、Randy Engle via 4D_Tech 
<4d_tech@lists.4d.com<mailto:4d_tech@lists.4d.com>>のメール:

If you really need it, it would be a two step process. Step one Begin sql  
select primary_key form table where (some criteria) into :$primaryKeyArray end 
sql



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RE: 4D Selection from SQL Query

2019-02-05 Thread Randy Engle via 4D_Tech 
Miyako,

Many thanks!

Randy Engle

-Original Message-
From: 4D_Tech <4d_tech-boun...@lists.4d.com> On Behalf Of Keisuke Miyako via 
4D_Tech
Sent: Tuesday, February 5, 2019 4:30 PM
To: 4D iNug Technical <4d_tech@lists.4d.com>
Cc: Keisuke Miyako 
Subject: Re: 4D Selection from SQL Query

alternatively, I guess we can SELECT __ROW_ID == record number (not all tables 
have a primary key).

https://doc.4d.com/4Dv17/4D/17/Replication-via-SQL.300-3786654.en.html
https://doc.4d.com/4Dv17/4D/17/CREATE-SELECTION-FROM-ARRAY.301-3729926.en.html

2019/02/06 3:31、Randy Engle via 4D_Tech 
<4d_tech@lists.4d.com<mailto:4d_tech@lists.4d.com>>のメール:

If you really need it, it would be a two step process. Step one Begin sql  
select primary_key form table where (some criteria) into :$primaryKeyArray end 
sql



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Re: 4D Selection from SQL Query

2019-02-05 Thread Keisuke Miyako via 4D_Tech 
alternatively, I guess we can SELECT __ROW_ID == record number (not all tables 
have a primary key).

https://doc.4d.com/4Dv17/4D/17/Replication-via-SQL.300-3786654.en.html
https://doc.4d.com/4Dv17/4D/17/CREATE-SELECTION-FROM-ARRAY.301-3729926.en.html

2019/02/06 3:31、Randy Engle via 4D_Tech 
<4d_tech@lists.4d.com>のメール:

If you really need it, it would be a two step process. Step one Begin sql  
select primary_key form table where (some criteria) into :$primaryKeyArray end 
sql



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RE: 4D Selection from SQL Query

2019-02-05 Thread Randy Engle via 4D_Tech 
Chuck,

Many thanks!  ( I hunched that I'd hear from you on this one. )

It is as I expected:   ce n'est pas possible
Except as you showed in your example
(Which has a little bit of merit for what I'm thinking about doing)

Thanks!



Randy Engle



It is not possible. If you really need it, it would be a two step process. Step 
one Begin sql  select primary_key form table where (some criteria) into 
:$primaryKeyArray end sql

query with array([table]primary_key;$primaryKeyArray)
Don't know why you would do this except you could build sql where on the fly


BTW not creating a selection of records and not loading one is one of the 
beautiful parts of sql as you do nto need to muck with the current selection



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Re: 4D Selection from SQL Query

2019-02-05 Thread Charles Miller via 4D_Tech 
It is not possible. If you really need it, it would be a two step
process. Step one
Begin sql
 select primary_key form table
where (some criteria)
into :$primaryKeyArray
end sql

query with array([table]primary_key;$primaryKeyArray)
Don't know why you would do this except you could build sql where on the fly


BTW not creating a selection of records and not loading one is one of
the beautiful parts of sql as you do nto need to muck with the current
selection

Regards

Chuck

On Tue, Feb 5, 2019 at 12:56 PM Randy Engle via 4D_Tech
<4d_tech@lists.4d.com> wrote:
>
> For you SQL aficionados
>
> I know that I can get a "selection" of 4D records using QUERY BY SQL
>
> However as a point of curiosity and interest, is it reasonably easy/possible 
> to get a selection of 4D records when using the other SQL commands
> e.g.
> Begin SQL-End SQL
> SQL EXECUTE
>
> Or, am I p...ing into the wind?
>
> Thanks!
>
> Randy Engle
>
>
> **
> 4D Internet Users Group (4D iNUG)
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