RE: sql, Using a variable or column name on a 'connect to' -- MIDRANGE-L

Apparently one cannot use a variable name as part of a three part name.
[SQL0950] Relational database SYSTEM_NAME not in relational database directory.

-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Rob Berendt
Sent: Friday, February 1, 2019 8:04 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: RE: sql, Using a variable or column name on a 'connect to'

I don't suppose one can use a variable as part of a three part name?
FOR V1 AS
C1 CURSOR FOR
select x.* from table(
values('RACK1HST'), ('GDWEB'), ('GDIHQ1'), ('GDISYS1'), ('MAIL1'),
('RACK2HST'), ('GDWEB2'), ('GDIHQ2'), ('GDISYS2'), ('MAILTWO'),
('RACK3HST'), ('MAIL3'), ('GDI'), ('DOMTEST'), ('MAIL4')) as x (SYSTEM_NAME)
DO
Select ... from SYSTEM_NAME.myschema.mytable ...
...
END FOR;

-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Rob Berendt
Sent: Friday, February 1, 2019 7:55 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: RE: sql, Using a variable or column name on a 'connect to'

Documentation was correct.
SET CONNECT_COMMAND = 'CONNECT TO ' CONCAT SYSTEM_NAME;
EXECUTE IMMEDIATE CONNECT_COMMAND; = SQL0084

-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Rob Berendt
Sent: Friday, February 1, 2019 7:39 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: RE: sql, Using a variable or column name on a 'connect to'

Based on the documentation I would say I would be unable to use EXECUTE IMMEDIATE, but I'll try https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_73/db2/rbafzconj1.htm
<snip>
It is an executable statement that cannot be dynamically prepared.
</snip>

-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of dlclark@xxxxxxxxxxxxxxxx
Sent: Friday, February 1, 2019 12:05 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: sql, Using a variable or column name on a 'connect to'

"MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> wrote on 01/31/2019
10:16:14 PM:

CONNECT supports a variable name. But I wonder if that is only when
within a HLL.
I cannot get a CONNECT TO within SPL to support either a column name
or a variable.

Can you build the statement in a variable and use it with EXECUTE IMMEDIATE?

Sincerely,

Dave Clark
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